[{"date_updated":"2026-10-16T08:33:32Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_created":"2024-08-04T22:01:22Z","article_type":"original","oa_version":"Preprint","publisher":"AIP Publishing","volume":65,"article_number":"063302","scopus_import":"1","oa":1,"department":[{"_id":"LaEr"}],"article_processing_charge":"No","author":[{"orcid":"0000-0002-4901-7992","id":"42198EFA-F248-11E8-B48F-1D18A9856A87","first_name":"Giorgio","last_name":"Cipolloni","full_name":"Cipolloni, Giorgio"},{"id":"4DBD5372-F248-11E8-B48F-1D18A9856A87","first_name":"László","orcid":"0000-0001-5366-9603","last_name":"Erdös","full_name":"Erdös, László"},{"last_name":"Xu","full_name":"Xu, Yuanyuan","id":"7902bdb1-a2a4-11eb-a164-c9216f71aea3","first_name":"Yuanyuan","orcid":"0000-0003-1559-1205"}],"language":[{"iso":"eng"}],"intvolume":"        65","issue":"6","project":[{"_id":"62796744-2b32-11ec-9570-940b20777f1d","call_identifier":"H2020","name":"Random matrices beyond Wigner-Dyson-Mehta","grant_number":"101020331"}],"fulldoi":"https://doi.org/10.1063/5.0209705","acknowledgement":"L.E. and Y.X. were supported by the ERC Advanced Grant “RMTBeyond” Grant No. 101020331.","supplementarymaterial":"yes","year":"2024","abstract":[{"text":"We consider the spectral radius of a large random matrix X with independent, identically distributed entries. We show that its typical size is given by a precise three-term asymptotics with an optimal error term beyond the radius of the celebrated circular law. The coefficients in this asymptotics are universal but they differ from a similar asymptotics recently proved for the rightmost eigenvalue of X in Cipolloni et al., Ann. Probab. 51(6), 2192–2242 (2023). To access the more complicated spectral radius, we need to establish a new decorrelation mechanism for the low-lying singular values of X − z for different complex shift parameters z using the Dyson Brownian Motion.","lang":"eng"}],"dataavailabilitystatement":"Data sharing is not applicable to this article as no new data were created or analyzed in this study.\r\n\r\n","corr_author":"1","status":"public","title":"Precise asymptotics for the spectral radius of a large random matrix","publication_status":"published","_id":"17375","publication":"Journal of Mathematical Physics","quality_controlled":"1","das_tickbox":"1","day":"01","citation":{"ieee":"G. Cipolloni, L. Erdös, and Y. Xu, “Precise asymptotics for the spectral radius of a large random matrix,” <i>Journal of Mathematical Physics</i>, vol. 65, no. 6. AIP Publishing, 2024.","ama":"Cipolloni G, Erdös L, Xu Y. Precise asymptotics for the spectral radius of a large random matrix. <i>Journal of Mathematical Physics</i>. 2024;65(6). doi:<a href=\"https://doi.org/10.1063/5.0209705\">10.1063/5.0209705</a>","apa":"Cipolloni, G., Erdös, L., &#38; Xu, Y. (2024). Precise asymptotics for the spectral radius of a large random matrix. <i>Journal of Mathematical Physics</i>. AIP Publishing. <a href=\"https://doi.org/10.1063/5.0209705\">https://doi.org/10.1063/5.0209705</a>","mla":"Cipolloni, Giorgio, et al. “Precise Asymptotics for the Spectral Radius of a Large Random Matrix.” <i>Journal of Mathematical Physics</i>, vol. 65, no. 6, 063302, AIP Publishing, 2024, doi:<a href=\"https://doi.org/10.1063/5.0209705\">10.1063/5.0209705</a>.","chicago":"Cipolloni, Giorgio, László Erdös, and Yuanyuan Xu. “Precise Asymptotics for the Spectral Radius of a Large Random Matrix.” <i>Journal of Mathematical Physics</i>. AIP Publishing, 2024. <a href=\"https://doi.org/10.1063/5.0209705\">https://doi.org/10.1063/5.0209705</a>.","short":"G. Cipolloni, L. Erdös, Y. Xu, Journal of Mathematical Physics 65 (2024).","ista":"Cipolloni G, Erdös L, Xu Y. 2024. Precise asymptotics for the spectral radius of a large random matrix. Journal of Mathematical Physics. 65(6), 063302."},"external_id":{"isi":["001252240700002"],"arxiv":["2210.15643"]},"publication_identifier":{"issn":["0022-2488"]},"researchdata_availability":"not applicable","doi":"10.1063/5.0209705","date_published":"2024-06-01T00:00:00Z","arxiv":1,"month":"06","isi":1,"type":"journal_article","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2210.15643"}],"ec_funded":1},{"volume":34,"article_type":"original","oa_version":"Preprint","publisher":"Institute of Mathematical Statistics","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_created":"2024-02-25T23:00:56Z","date_updated":"2026-10-16T08:33:55Z","intvolume":"        34","issue":"1B","fulldoi":"https://doi.org/10.1214/23-AAP2000","project":[{"_id":"62796744-2b32-11ec-9570-940b20777f1d","call_identifier":"H2020","name":"Random matrices beyond Wigner-Dyson-Mehta","grant_number":"101020331"}],"language":[{"iso":"eng"}],"oa":1,"scopus_import":"1","department":[{"_id":"LaEr"}],"author":[{"orcid":"0000-0001-5366-9603","first_name":"László","id":"4DBD5372-F248-11E8-B48F-1D18A9856A87","full_name":"Erdös, László","last_name":"Erdös"},{"last_name":"McKenna","full_name":"McKenna, Benjamin","orcid":"0000-0003-2625-495X","id":"b0cc634c-d549-11ee-96c8-87338c7ad808","first_name":"Benjamin"}],"article_processing_charge":"No","_id":"15025","publication":"Annals of Applied Probability","quality_controlled":"1","das_tickbox":"0","citation":{"apa":"Erdös, L., &#38; McKenna, B. (2024). Extremal statistics of quadratic forms of GOE/GUE eigenvectors. <i>Annals of Applied Probability</i>. Institute of Mathematical Statistics. <a href=\"https://doi.org/10.1214/23-AAP2000\">https://doi.org/10.1214/23-AAP2000</a>","ama":"Erdös L, McKenna B. Extremal statistics of quadratic forms of GOE/GUE eigenvectors. <i>Annals of Applied Probability</i>. 2024;34(1B):1623-1662. doi:<a href=\"https://doi.org/10.1214/23-AAP2000\">10.1214/23-AAP2000</a>","ieee":"L. Erdös and B. McKenna, “Extremal statistics of quadratic forms of GOE/GUE eigenvectors,” <i>Annals of Applied Probability</i>, vol. 34, no. 1B. Institute of Mathematical Statistics, pp. 1623–1662, 2024.","short":"L. Erdös, B. McKenna, Annals of Applied Probability 34 (2024) 1623–1662.","ista":"Erdös L, McKenna B. 2024. Extremal statistics of quadratic forms of GOE/GUE eigenvectors. Annals of Applied Probability. 34(1B), 1623–1662.","chicago":"Erdös, László, and Benjamin McKenna. “Extremal Statistics of Quadratic Forms of GOE/GUE Eigenvectors.” <i>Annals of Applied Probability</i>. Institute of Mathematical Statistics, 2024. <a href=\"https://doi.org/10.1214/23-AAP2000\">https://doi.org/10.1214/23-AAP2000</a>.","mla":"Erdös, László, and Benjamin McKenna. “Extremal Statistics of Quadratic Forms of GOE/GUE Eigenvectors.” <i>Annals of Applied Probability</i>, vol. 34, no. 1B, Institute of Mathematical Statistics, 2024, pp. 1623–62, doi:<a href=\"https://doi.org/10.1214/23-AAP2000\">10.1214/23-AAP2000</a>."},"day":"01","publication_status":"published","abstract":[{"text":"We consider quadratic forms of deterministic matrices A evaluated at the random eigenvectors of a large N×N GOE or GUE matrix, or equivalently evaluated at the columns of a Haar-orthogonal or Haar-unitary random matrix. We prove that, as long as the deterministic matrix has rank much smaller than √N, the distributions of the extrema of these quadratic forms are asymptotically the same as if the eigenvectors were independent Gaussians. This reduces the problem to Gaussian computations, which we carry out in several cases to illustrate our result, finding Gumbel or Weibull limiting distributions depending on the signature of A. Our result also naturally applies to the eigenvectors of any invariant ensemble.","lang":"eng"}],"year":"2024","corr_author":"1","status":"public","title":"Extremal statistics of quadratic forms of GOE/GUE eigenvectors","acknowledgement":"The first author was supported by the ERC Advanced Grant “RMTBeyond” No. 101020331. The second author was supported by Fulbright Austria and the Austrian Marshall Plan Foundation.","supplementarymaterial":"yes","type":"journal_article","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2208.12206"}],"page":"1623-1662","ec_funded":1,"month":"02","isi":1,"doi":"10.1214/23-AAP2000","date_published":"2024-02-01T00:00:00Z","arxiv":1,"external_id":{"arxiv":["2208.12206"],"isi":["001163006100021"]},"researchdata_availability":"no","publication_identifier":{"issn":["1050-5164"]}},{"OA_place":"publisher","supplementarymaterial":"no","abstract":[{"text":"This thesis is structured into two parts. In the first part, we consider the random\r\nvariable X := Tr(f1(W)A1 . . . fk(W)Ak) where W is an N × N Hermitian Wigner matrix, k ∈ N, and we choose (possibly N-dependent) regular functions f1, . . . , fk as well as\r\nbounded deterministic matrices A1, . . . , Ak. In this context, we prove a functional central\r\nlimit theorem on macroscopic and mesoscopic scales, showing that the fluctuations of X\r\naround its expectation are Gaussian and that the limiting covariance structure is given\r\nby a deterministic recursion. We further give explicit error bounds in terms of the scaling\r\nof f1, . . . , fk and the number of traceless matrices among A1, . . . , Ak, thus extending\r\nthe results of Cipolloni, Erdős and Schröder [40] to products of arbitrary length k ≥ 2.\r\nAnalyzing the underlying combinatorics leads to a non-recursive formula for the variance\r\nof X as well as the covariance of X and Y := Tr(fk+1(W)Ak+1 . . . fk+ℓ(W)Ak+ℓ) of similar\r\nbuild. When restricted to polynomials, these formulas reproduce recent results of Male,\r\nMingo, Peché, and Speicher [107], showing that the underlying combinatorics of noncrossing partitions and annular non-crossing permutations continue to stay valid beyond\r\nthe setting of second-order free probability theory. As an application, we consider the\r\nfluctuation of Tr(eitW A1e\r\n−itW A2)/N around its thermal value Tr(A1) Tr(A2)/N2 when t\r\nis large and give an explicit formula for the variance.\r\nThe second part of the thesis collects three smaller projects focusing on different random\r\nmatrix models. In the first project, we show that a class of weakly perturbed Hamiltonians\r\nof the form Hλ = H0 + λW, where W is a Wigner matrix, exhibits prethermalization.\r\nThat is, the time evolution generated by Hλ relaxes to its ultimate thermal state via an\r\nintermediate prethermal state with a lifetime of order λ\r\n−2\r\n. As the main result, we obtain\r\na general relaxation formula, expressing the perturbed dynamics via the unperturbed\r\ndynamics and the ultimate thermal state. The proof relies on a two-resolvent global law\r\nfor the deformed Wigner matrix Hλ.\r\nThe second project focuses on correlated random matrices, more precisely on a correlated N × N Hermitian random matrix with a polynomially decaying metric correlation\r\nstructure. A trivial a priori bound shows that the operator norm of this model is stochastically dominated by √\r\nN. However, by calculating the trace of the moments of the matrix\r\nand using the summable decay of the cumulants, the norm estimate can be improved to a\r\nbound of order one.\r\nIn the third project, we consider a multiplicative perturbation of the form UA(t) where U\r\nis a unitary random matrix and A = diag(t, 1, ..., 1). This so-called UA model was\r\nfirst introduced by Fyodorov [73] for its applications in scattering theory. We give a\r\ngeneral description of the eigenvalue trajectories obtained by varying the parameter t and\r\nintroduce a flow of deterministic domains that separates the outlier resulting from the\r\nrank-one perturbation from the typical eigenvalues for all sub-critical timescales. The\r\nresults are obtained under generic assumptions on U that hold for various unitary random\r\nmatrices, including the circular unitary ensemble (CUE) in the original formulation of\r\nthe model.","lang":"eng"}],"year":"2024","corr_author":"1","status":"public","title":"Central limit theorems for random matrices: From resolvents to free probability","publication_status":"published","has_accepted_license":"1","file":[{"date_created":"2024-06-26T12:39:36Z","access_level":"open_access","creator":"jreker","content_type":"application/pdf","date_updated":"2024-06-26T12:44:53Z","file_size":2783027,"file_id":"17176","file_name":"ISTA_Thesis_JReker.pdf","checksum":"fb16d86e1f2753dc3a9e14d2bdfd84cd","relation":"main_file"},{"file_name":"ISTA_Thesis_JReker_SourceFiles.zip","file_id":"17177","checksum":"cb1e54009d47c1dcf5b866c4566fa27f","relation":"source_file","creator":"jreker","content_type":"application/zip","date_created":"2024-06-26T12:39:42Z","access_level":"closed","date_updated":"2024-06-26T12:44:53Z","file_size":3054878}],"tmp":{"name":"Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)","image":"/images/cc_by_nc_sa.png","legal_code_url":"https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode","short":"CC BY-NC-SA (4.0)"},"_id":"17164","das_tickbox":"0","citation":{"mla":"Reker, Jana. <i>Central Limit Theorems for Random Matrices: From Resolvents to Free Probability</i>. Institute of Science and Technology Austria, 2024, doi:<a href=\"https://doi.org/10.15479/at:ista:17164\">10.15479/at:ista:17164</a>.","chicago":"Reker, Jana. “Central Limit Theorems for Random Matrices: From Resolvents to Free Probability.” Institute of Science and Technology Austria, 2024. <a href=\"https://doi.org/10.15479/at:ista:17164\">https://doi.org/10.15479/at:ista:17164</a>.","short":"J. Reker, Central Limit Theorems for Random Matrices: From Resolvents to Free Probability, Institute of Science and Technology Austria, 2024.","ista":"Reker J. 2024. Central limit theorems for random matrices: From resolvents to free probability. Institute of Science and Technology Austria.","ieee":"J. Reker, “Central limit theorems for random matrices: From resolvents to free probability,” Institute of Science and Technology Austria, 2024.","ama":"Reker J. Central limit theorems for random matrices: From resolvents to free probability. 2024. doi:<a href=\"https://doi.org/10.15479/at:ista:17164\">10.15479/at:ista:17164</a>","apa":"Reker, J. (2024). <i>Central limit theorems for random matrices: From resolvents to free probability</i>. Institute of Science and Technology Austria. <a href=\"https://doi.org/10.15479/at:ista:17164\">https://doi.org/10.15479/at:ista:17164</a>"},"alternative_title":["ISTA Thesis"],"day":"26","keyword":["Random Matrices","Spectrum","Central Limit Theorem","Resolvent","Free Probability"],"publication_identifier":{"issn":["2663-337X"]},"researchdata_availability":"no","doi":"10.15479/at:ista:17164","date_published":"2024-06-26T00:00:00Z","doi_confirm":"1","month":"06","type":"dissertation","page":"206","ec_funded":1,"related_material":{"record":[{"id":"17173","relation":"part_of_dissertation","status":"public"},{"status":"public","id":"11135","relation":"part_of_dissertation"},{"relation":"part_of_dissertation","id":"17174","status":"public"},{"status":"public","relation":"part_of_dissertation","id":"17047"},{"status":"public","relation":"part_of_dissertation","id":"17154"}]},"date_updated":"2026-10-16T08:35:03Z","degree_awarded":"PhD","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_created":"2024-06-24T11:23:29Z","oa_version":"Published Version","publisher":"Institute of Science and Technology Austria","ddc":["519"],"file_date_updated":"2024-06-26T12:44:53Z","supervisor":[{"id":"4DBD5372-F248-11E8-B48F-1D18A9856A87","first_name":"László","orcid":"0000-0001-5366-9603","last_name":"Erdös","full_name":"Erdös, László"}],"oa":1,"article_processing_charge":"No","department":[{"_id":"GradSch"},{"_id":"LaEr"}],"author":[{"full_name":"Reker, Jana","last_name":"Reker","first_name":"Jana","id":"e796e4f9-dc8d-11ea-abe3-97e26a0323e9"}],"language":[{"iso":"eng"}],"fulldoi":"https://doi.org/10.15479/at:ista:17164","project":[{"name":"Random matrices beyond Wigner-Dyson-Mehta","call_identifier":"H2020","_id":"62796744-2b32-11ec-9570-940b20777f1d","grant_number":"101020331"}]},{"project":[{"grant_number":"101020331","name":"Random matrices beyond Wigner-Dyson-Mehta","call_identifier":"H2020","_id":"62796744-2b32-11ec-9570-940b20777f1d"}],"fulldoi":"https://doi.org/10.1016/j.jfa.2024.110495","issue":"4","intvolume":"       287","language":[{"iso":"eng"}],"department":[{"_id":"LaEr"}],"article_processing_charge":"Yes (via OA deal)","author":[{"first_name":"Giorgio","id":"42198EFA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-4901-7992","full_name":"Cipolloni, Giorgio","last_name":"Cipolloni"},{"full_name":"Erdös, László","last_name":"Erdös","orcid":"0000-0001-5366-9603","first_name":"László","id":"4DBD5372-F248-11E8-B48F-1D18A9856A87"},{"id":"31d731d7-d235-11ea-ad11-b50331c8d7fb","first_name":"Sven Joscha","orcid":"0000-0003-1106-327X","last_name":"Henheik","full_name":"Henheik, Sven Joscha"},{"full_name":"Schröder, Dominik J","last_name":"Schröder","orcid":"0000-0002-2904-1856","first_name":"Dominik J","id":"408ED176-F248-11E8-B48F-1D18A9856A87"}],"OA_type":"hybrid","scopus_import":"1","oa":1,"article_number":"110495","volume":287,"ddc":["510"],"file_date_updated":"2025-06-24T13:14:21Z","publisher":"Elsevier","article_type":"original","oa_version":"Published Version","date_created":"2024-05-26T22:00:57Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_updated":"2026-10-16T08:36:18Z","related_material":{"record":[{"status":"public","relation":"dissertation_contains","id":"19540"}]},"ec_funded":1,"type":"journal_article","month":"08","isi":1,"date_published":"2024-08-15T00:00:00Z","doi":"10.1016/j.jfa.2024.110495","publication_identifier":{"issn":["0022-1236"],"eissn":["1096-0783"]},"researchdata_availability":"not applicable","external_id":{"isi":["001325502400001"]},"publication":"Journal of Functional Analysis","das_tickbox":"1","quality_controlled":"1","day":"15","citation":{"mla":"Cipolloni, Giorgio, et al. “Optimal Lower Bound on Eigenvector Overlaps for Non-Hermitian Random Matrices.” <i>Journal of Functional Analysis</i>, vol. 287, no. 4, 110495, Elsevier, 2024, doi:<a href=\"https://doi.org/10.1016/j.jfa.2024.110495\">10.1016/j.jfa.2024.110495</a>.","chicago":"Cipolloni, Giorgio, László Erdös, Sven Joscha Henheik, and Dominik J Schröder. “Optimal Lower Bound on Eigenvector Overlaps for Non-Hermitian Random Matrices.” <i>Journal of Functional Analysis</i>. Elsevier, 2024. <a href=\"https://doi.org/10.1016/j.jfa.2024.110495\">https://doi.org/10.1016/j.jfa.2024.110495</a>.","ista":"Cipolloni G, Erdös L, Henheik SJ, Schröder DJ. 2024. Optimal lower bound on eigenvector overlaps for non-Hermitian random matrices. Journal of Functional Analysis. 287(4), 110495.","short":"G. Cipolloni, L. Erdös, S.J. Henheik, D.J. Schröder, Journal of Functional Analysis 287 (2024).","ama":"Cipolloni G, Erdös L, Henheik SJ, Schröder DJ. Optimal lower bound on eigenvector overlaps for non-Hermitian random matrices. <i>Journal of Functional Analysis</i>. 2024;287(4). doi:<a href=\"https://doi.org/10.1016/j.jfa.2024.110495\">10.1016/j.jfa.2024.110495</a>","ieee":"G. Cipolloni, L. Erdös, S. J. Henheik, and D. J. Schröder, “Optimal lower bound on eigenvector overlaps for non-Hermitian random matrices,” <i>Journal of Functional Analysis</i>, vol. 287, no. 4. Elsevier, 2024.","apa":"Cipolloni, G., Erdös, L., Henheik, S. J., &#38; Schröder, D. J. (2024). Optimal lower bound on eigenvector overlaps for non-Hermitian random matrices. <i>Journal of Functional Analysis</i>. Elsevier. <a href=\"https://doi.org/10.1016/j.jfa.2024.110495\">https://doi.org/10.1016/j.jfa.2024.110495</a>"},"_id":"17049","file":[{"content_type":"application/pdf","creator":"dernst","access_level":"open_access","date_created":"2025-06-24T13:14:21Z","file_size":1374854,"date_updated":"2025-06-24T13:14:21Z","file_name":"2025_JourFunctionalAnalysis_Cipolloni.pdf","success":1,"file_id":"19891","relation":"main_file","checksum":"07d3f73e0c56e68eb110851842c22ee0"}],"tmp":{"image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"has_accepted_license":"1","publication_status":"published","corr_author":"1","status":"public","title":"Optimal lower bound on eigenvector overlaps for non-Hermitian random matrices","abstract":[{"text":"We consider large non-Hermitian NxN matrices with an additive independent, identically distributed (i.i.d.) noise for each matrix elements. We show that already a small noise of variance 1/N completely thermalises the bulk singular vectors, in particular they satisfy the strong form of Quantum Unique Ergodicity (QUE) with an optimal speed of convergence. In physics terms, we thus extend the Eigenstate Thermalisation Hypothesis, formulated originally by Deutsch [34] and proven for Wigner matrices in [23], to arbitrary non-Hermitian matrices with an i.i.d. noise. As a consequence we obtain an optimal lower bound on the diagonal overlaps of the corresponding non-Hermitian eigenvectors. This quantity, also known as the (square of the) eigenvalue condition number measuring the sensitivity of the eigenvalue to small perturbations, has notoriously escaped rigorous treatment beyond the explicitly computable Ginibre ensemble apart from the very recent upper bounds given in [7] and [45]. As a key tool, we develop a new systematic decomposition of general observables in random matrix theory that governs the size of products of resolvents with deterministic matrices in between.","lang":"eng"}],"year":"2024","dataavailabilitystatement":"No data was used for the research described in the article.","supplementarymaterial":"yes","acknowledgement":"Supported by ERC Advanced Grant “RMTBeyond” No. 101020331.\r\nSupported by the SNSF Ambizione Grant PZ00P2_209089.","OA_place":"publisher"},{"language":[{"iso":"eng"}],"issue":"9","intvolume":"        77","project":[{"_id":"62796744-2b32-11ec-9570-940b20777f1d","call_identifier":"H2020","name":"Random matrices beyond Wigner-Dyson-Mehta","grant_number":"101020331"}],"fulldoi":"https://doi.org/10.1002/cpa.22201","scopus_import":"1","oa":1,"author":[{"id":"4DBD5372-F248-11E8-B48F-1D18A9856A87","first_name":"László","orcid":"0000-0001-5366-9603","last_name":"Erdös","full_name":"Erdös, László"},{"last_name":"Ji","full_name":"Ji, Hong Chang","id":"dd216c0a-c1f9-11eb-beaf-e9ea9d2de76d","first_name":"Hong Chang"}],"OA_type":"hybrid","department":[{"_id":"LaEr"}],"article_processing_charge":"Yes (via OA deal)","article_type":"original","oa_version":"Published Version","publisher":"Wiley","file_date_updated":"2025-01-09T09:36:41Z","ddc":["510"],"volume":77,"date_updated":"2026-10-16T08:35:46Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_created":"2024-05-12T22:01:02Z","month":"09","isi":1,"type":"journal_article","page":"3785-3840","ec_funded":1,"external_id":{"arxiv":["2301.04981"],"isi":["001217139900001"]},"publication_identifier":{"eissn":["1097-0312"],"issn":["0010-3640"]},"researchdata_availability":"no","doi":"10.1002/cpa.22201","date_published":"2024-09-01T00:00:00Z","arxiv":1,"has_accepted_license":"1","publication_status":"published","file":[{"date_created":"2025-01-09T09:36:41Z","access_level":"open_access","content_type":"application/pdf","creator":"dernst","date_updated":"2025-01-09T09:36:41Z","file_size":566963,"file_id":"18803","success":1,"file_name":"2024_CommPureApplMath_Erdoes.pdf","checksum":"fbcc9cc7bf274f024e4f4afc9c208f96","relation":"main_file"}],"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode","short":"CC BY-NC-ND (4.0)","name":"Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)","image":"/images/cc_by_nc_nd.png"},"_id":"15378","publication":"Communications on Pure and Applied Mathematics","das_tickbox":"0","quality_controlled":"1","citation":{"ieee":"L. Erdös and H. C. Ji, “Wegner estimate and upper bound on the eigenvalue condition number of non-Hermitian random matrices,” <i>Communications on Pure and Applied Mathematics</i>, vol. 77, no. 9. Wiley, pp. 3785–3840, 2024.","ama":"Erdös L, Ji HC. Wegner estimate and upper bound on the eigenvalue condition number of non-Hermitian random matrices. <i>Communications on Pure and Applied Mathematics</i>. 2024;77(9):3785-3840. doi:<a href=\"https://doi.org/10.1002/cpa.22201\">10.1002/cpa.22201</a>","apa":"Erdös, L., &#38; Ji, H. C. (2024). Wegner estimate and upper bound on the eigenvalue condition number of non-Hermitian random matrices. <i>Communications on Pure and Applied Mathematics</i>. Wiley. <a href=\"https://doi.org/10.1002/cpa.22201\">https://doi.org/10.1002/cpa.22201</a>","mla":"Erdös, László, and Hong Chang Ji. “Wegner Estimate and Upper Bound on the Eigenvalue Condition Number of Non-Hermitian Random Matrices.” <i>Communications on Pure and Applied Mathematics</i>, vol. 77, no. 9, Wiley, 2024, pp. 3785–840, doi:<a href=\"https://doi.org/10.1002/cpa.22201\">10.1002/cpa.22201</a>.","chicago":"Erdös, László, and Hong Chang Ji. “Wegner Estimate and Upper Bound on the Eigenvalue Condition Number of Non-Hermitian Random Matrices.” <i>Communications on Pure and Applied Mathematics</i>. Wiley, 2024. <a href=\"https://doi.org/10.1002/cpa.22201\">https://doi.org/10.1002/cpa.22201</a>.","ista":"Erdös L, Ji HC. 2024. Wegner estimate and upper bound on the eigenvalue condition number of non-Hermitian random matrices. Communications on Pure and Applied Mathematics. 77(9), 3785–3840.","short":"L. Erdös, H.C. Ji, Communications on Pure and Applied Mathematics 77 (2024) 3785–3840."},"day":"01","acknowledgement":"László Erdős is partially supported by ERC Advanced Grant “RMTBeyond” No. 101020331. Hong Chang Ji is supported by ERC Advanced Grant “RMTBeyond” No. 101020331.","OA_place":"publisher","supplementarymaterial":"yes","year":"2024","abstract":[{"text":"We consider N×N non-Hermitian random matrices of the form X+A, where A is a general deterministic matrix and N−−√X consists of independent entries with zero mean, unit variance, and bounded densities. For this ensemble, we prove (i) a Wegner estimate, i.e. that the local density of eigenvalues is bounded by N1+o(1) and (ii) that the expected condition number of any bulk eigenvalue is bounded by N1+o(1); both results are optimal up to the factor No(1). The latter result complements the very recent matching lower bound obtained in [15] (arXiv:2301.03549) and improves the N-dependence of the upper bounds in [5,6,32] (arXiv:1906.11819, arXiv:2005.08930, arXiv:2005.08908). Our main ingredient, a near-optimal lower tail estimate for the small singular values of X+A−z, is of independent interest.","lang":"eng"}],"corr_author":"1","title":"Wegner estimate and upper bound on the eigenvalue condition number of non-Hermitian random matrices","status":"public"},{"researchdata_availability":"no","publication_identifier":{"eissn":["1083-6489"]},"external_id":{"arxiv":["2307.11028"],"isi":["001381599200001"]},"arxiv":1,"date_published":"2024-12-20T00:00:00Z","doi":"10.1214/24-EJP1247","month":"12","isi":1,"ec_funded":1,"type":"journal_article","supplementarymaterial":"no","DOAJ_listed":"1","acknowledgement":"I am very grateful to László Erdős for suggesting the topic and many valuable discussions during my work on the project. I would also like to thank the two anonymous referees for their careful reading of the manuscript and detailed feedback.\r\nPartially supported by ERC Advanced Grants “RMTBeyond” No. 101020331 and “LDRaM” No. 884584.","OA_place":"publisher","corr_author":"1","title":"Multi-point functional central limit theorem for Wigner matrices","status":"public","abstract":[{"lang":"eng","text":"Consider the random variable $\\mathrm{Tr}( f_1(W)A_1\\dots f_k(W)A_k)$ where $W$ is an $N\\times N$ Hermitian Wigner matrix, $k\\in\\mathbb{N}$, and choose (possibly $N$-dependent) regular functions $f_1,\\dots, f_k$ as well as bounded deterministic matrices $A_1,\\dots,A_k$. We give a functional central limit theorem showing that the fluctuations around the expectation are Gaussian. Moreover, we determine the limiting covariance structure and give explicit error bounds in terms of the scaling of $f_1,\\dots,f_k$ and the number of traceless matrices among $A_1,\\dots,A_k$, thus extending the results of [Cipolloni, Erdős, Schröder 2023] to products of arbitrary length $k\\geq2$. As an application, we consider the fluctuation of $\\mathrm{Tr}(\\mathrm{e}^{\\mathrm{i} tW}A_1\\mathrm{e}^{-\\mathrm{i} tW}A_2)$ around its thermal value $\\mathrm{Tr}(A_1)\\mathrm{Tr}(A_2)$ when $t$ is large and give an explicit formula for the variance."}],"year":"2024","file":[{"checksum":"67178feaa8630a332599d3037a3fe70e","relation":"main_file","file_name":"2024_ElectrJournProbability_Reker.pdf","file_id":"18773","success":1,"date_updated":"2025-01-08T08:44:03Z","file_size":812428,"creator":"dernst","content_type":"application/pdf","date_created":"2025-01-08T08:44:03Z","access_level":"open_access"}],"tmp":{"image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"publication_status":"published","has_accepted_license":"1","quality_controlled":"1","publication":"Electronic Journal of Probability","das_tickbox":"0","day":"20","citation":{"ista":"Reker J. 2024. Multi-point functional central limit theorem for Wigner matrices. Electronic Journal of Probability. 29, 191.","short":"J. Reker, Electronic Journal of Probability 29 (2024).","mla":"Reker, Jana. “Multi-Point Functional Central Limit Theorem for Wigner Matrices.” <i>Electronic Journal of Probability</i>, vol. 29, 191, Institute of Mathematical Statistics, 2024, doi:<a href=\"https://doi.org/10.1214/24-EJP1247\">10.1214/24-EJP1247</a>.","chicago":"Reker, Jana. “Multi-Point Functional Central Limit Theorem for Wigner Matrices.” <i>Electronic Journal of Probability</i>. Institute of Mathematical Statistics, 2024. <a href=\"https://doi.org/10.1214/24-EJP1247\">https://doi.org/10.1214/24-EJP1247</a>.","apa":"Reker, J. (2024). Multi-point functional central limit theorem for Wigner matrices. <i>Electronic Journal of Probability</i>. Institute of Mathematical Statistics. <a href=\"https://doi.org/10.1214/24-EJP1247\">https://doi.org/10.1214/24-EJP1247</a>","ama":"Reker J. Multi-point functional central limit theorem for Wigner matrices. <i>Electronic Journal of Probability</i>. 2024;29. doi:<a href=\"https://doi.org/10.1214/24-EJP1247\">10.1214/24-EJP1247</a>","ieee":"J. Reker, “Multi-point functional central limit theorem for Wigner matrices,” <i>Electronic Journal of Probability</i>, vol. 29. Institute of Mathematical Statistics, 2024."},"_id":"18762","article_number":"191","OA_type":"gold","article_processing_charge":"Yes","author":[{"id":"e796e4f9-dc8d-11ea-abe3-97e26a0323e9","first_name":"Jana","last_name":"Reker","full_name":"Reker, Jana"}],"department":[{"_id":"LaEr"}],"oa":1,"scopus_import":"1","language":[{"iso":"eng"}],"project":[{"_id":"62796744-2b32-11ec-9570-940b20777f1d","call_identifier":"H2020","name":"Random matrices beyond Wigner-Dyson-Mehta","grant_number":"101020331"}],"fulldoi":"https://doi.org/10.1214/24-EJP1247","intvolume":"        29","date_updated":"2026-10-16T08:38:43Z","related_material":{"record":[{"relation":"earlier_version","id":"17173","status":"public"}]},"date_created":"2025-01-05T23:01:58Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","publisher":"Institute of Mathematical Statistics","article_type":"original","oa_version":"Published Version","volume":29,"ddc":["510"],"file_date_updated":"2025-01-08T08:44:03Z"},{"arxiv":1,"date_published":"2024-06-20T00:00:00Z","doi":"10.1007/s11040-024-09483-y","publication_identifier":{"issn":["1385-0172"],"eissn":["1572-9656"]},"researchdata_availability":"not applicable","external_id":{"isi":["001251464300001"],"arxiv":["2307.11029"]},"ec_funded":1,"type":"journal_article","isi":1,"month":"06","title":"Fluctuation moments for regular functions of Wigner Matrices","status":"public","dataavailabilitystatement":"Data sharing not applicable to this article as no datasets were generated or analysed during the current study.","year":"2024","abstract":[{"lang":"eng","text":"We compute the deterministic approximation for mixed fluctuation moments of products of deterministic matrices and general Sobolev functions of Wigner matrices. Restricting to polynomials, our formulas reproduce recent results of Male et al. (Random Matrices Theory Appl. 11(2):2250015, 2022), showing that the underlying combinatorics of non-crossing partitions and annular non-crossing permutations continue to stay valid beyond the setting of second-order free probability theory. The formulas obtained further characterize the variance in the functional central limit theorem given in the recent companion paper (Reker in Preprint, arXiv:2204.03419, 2023). and thus allow identifying the fluctuation around the thermal value in certain thermalization problems."}],"supplementarymaterial":"yes","citation":{"apa":"Reker, J. (2024). Fluctuation moments for regular functions of Wigner Matrices. <i>Mathematical Physics, Analysis and Geometry</i>. Springer Nature. <a href=\"https://doi.org/10.1007/s11040-024-09483-y\">https://doi.org/10.1007/s11040-024-09483-y</a>","ieee":"J. Reker, “Fluctuation moments for regular functions of Wigner Matrices,” <i>Mathematical Physics, Analysis and Geometry</i>, vol. 27, no. 3. Springer Nature, 2024.","ama":"Reker J. Fluctuation moments for regular functions of Wigner Matrices. <i>Mathematical Physics, Analysis and Geometry</i>. 2024;27(3). doi:<a href=\"https://doi.org/10.1007/s11040-024-09483-y\">10.1007/s11040-024-09483-y</a>","ista":"Reker J. 2024. Fluctuation moments for regular functions of Wigner Matrices. Mathematical Physics, Analysis and Geometry. 27(3), 10.","short":"J. Reker, Mathematical Physics, Analysis and Geometry 27 (2024).","mla":"Reker, Jana. “Fluctuation Moments for Regular Functions of Wigner Matrices.” <i>Mathematical Physics, Analysis and Geometry</i>, vol. 27, no. 3, 10, Springer Nature, 2024, doi:<a href=\"https://doi.org/10.1007/s11040-024-09483-y\">10.1007/s11040-024-09483-y</a>.","chicago":"Reker, Jana. “Fluctuation Moments for Regular Functions of Wigner Matrices.” <i>Mathematical Physics, Analysis and Geometry</i>. Springer Nature, 2024. <a href=\"https://doi.org/10.1007/s11040-024-09483-y\">https://doi.org/10.1007/s11040-024-09483-y</a>."},"day":"20","das_tickbox":"1","quality_controlled":"1","publication":"Mathematical Physics, Analysis and Geometry","_id":"17154","tmp":{"image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"file":[{"content_type":"application/pdf","creator":"cchlebak","date_created":"2024-06-26T11:26:42Z","access_level":"open_access","date_updated":"2024-06-26T11:26:42Z","file_size":1327596,"file_name":"2024_MathPhysAnaGeo_Reker.pdf","file_id":"17175","success":1,"checksum":"7d04318d66f765621bdcb648378d458e","relation":"main_file"}],"publication_status":"published","has_accepted_license":"1","author":[{"id":"e796e4f9-dc8d-11ea-abe3-97e26a0323e9","first_name":"Jana","last_name":"Reker","full_name":"Reker, Jana"}],"department":[{"_id":"LaEr"}],"article_processing_charge":"Yes (via OA deal)","oa":1,"scopus_import":"1","article_number":"10","fulldoi":"https://doi.org/10.1007/s11040-024-09483-y","project":[{"_id":"B67AFEDC-15C9-11EA-A837-991A96BB2854","name":"IST Austria Open Access Fund"},{"name":"Random matrices beyond Wigner-Dyson-Mehta","_id":"62796744-2b32-11ec-9570-940b20777f1d","call_identifier":"H2020","grant_number":"101020331"}],"intvolume":"        27","issue":"3","language":[{"iso":"eng"}],"date_created":"2024-06-21T09:31:17Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_updated":"2026-10-16T08:35:04Z","related_material":{"record":[{"id":"17164","relation":"dissertation_contains","status":"public"}]},"volume":27,"ddc":["519"],"file_date_updated":"2024-06-26T11:26:42Z","publisher":"Springer Nature","oa_version":"Published Version","article_type":"original"},{"publication_status":"published","_id":"18656","das_tickbox":"1","quality_controlled":"1","publication":"Advances in Theoretical and Mathematical Physics","citation":{"chicago":"Cipolloni, Giorgio, László Erdös, and Sven Joscha Henheik. “Out-of-Time-Ordered Correlators for Wigner Matrices.” <i>Advances in Theoretical and Mathematical Physics</i>. International Press of Boston, 2024. <a href=\"https://doi.org/10.4310/ATMP.241031013250\">https://doi.org/10.4310/ATMP.241031013250</a>.","mla":"Cipolloni, Giorgio, et al. “Out-of-Time-Ordered Correlators for Wigner Matrices.” <i>Advances in Theoretical and Mathematical Physics</i>, vol. 28, no. 6, International Press of Boston, 2024, pp. 2025–83, doi:<a href=\"https://doi.org/10.4310/ATMP.241031013250\">10.4310/ATMP.241031013250</a>.","ista":"Cipolloni G, Erdös L, Henheik SJ. 2024. Out-of-time-ordered correlators for Wigner matrices. Advances in Theoretical and Mathematical Physics. 28(6), 2025–2083.","short":"G. Cipolloni, L. Erdös, S.J. Henheik, Advances in Theoretical and Mathematical Physics 28 (2024) 2025–2083.","ieee":"G. Cipolloni, L. Erdös, and S. J. Henheik, “Out-of-time-ordered correlators for Wigner matrices,” <i>Advances in Theoretical and Mathematical Physics</i>, vol. 28, no. 6. International Press of Boston, pp. 2025–2083, 2024.","ama":"Cipolloni G, Erdös L, Henheik SJ. Out-of-time-ordered correlators for Wigner matrices. <i>Advances in Theoretical and Mathematical Physics</i>. 2024;28(6):2025-2083. doi:<a href=\"https://doi.org/10.4310/ATMP.241031013250\">10.4310/ATMP.241031013250</a>","apa":"Cipolloni, G., Erdös, L., &#38; Henheik, S. J. (2024). Out-of-time-ordered correlators for Wigner matrices. <i>Advances in Theoretical and Mathematical Physics</i>. International Press of Boston. <a href=\"https://doi.org/10.4310/ATMP.241031013250\">https://doi.org/10.4310/ATMP.241031013250</a>"},"day":"30","OA_place":"repository","acknowledgement":"LE and JH were supported by the ERC Advanced Grant łRMTBeyondž No. 101020331","supplementarymaterial":"unclear","year":"2024","abstract":[{"text":"We consider the time evolution of the out-of-time-ordered correlator (OTOC) of two general observables \r\n and \r\n in a mean field chaotic quantum system described by a random Wigner matrix as its Hamiltonian. We rigorously identify three time regimes separated by the physically relevant scrambling and relaxation times. The main feature of our analysis is that we express the error terms in the optimal Schatten (tracial) norms of the observables, allowing us to track the exact dependence of the errors on their rank. In particular, for significantly overlapping observables with low rank the OTOC is shown to exhibit a significant local maximum at the scrambling time, a feature that may not have been noticed in the physics literature before. Our main tool is a novel multi-resolvent local law with Schatten norms that unifies and improves previous local laws involving either the much cruder operator norm (cf. [10]) or the Hilbert-Schmidt norm (cf. [11]).","lang":"eng"}],"corr_author":"1","title":"Out-of-time-ordered correlators for Wigner matrices","status":"public","month":"10","type":"journal_article","main_file_link":[{"open_access":"1","url":"https://doi.org/10.48550/arXiv.2402.17609"}],"page":"2025-2083","ec_funded":1,"external_id":{"arxiv":["2402.17609"]},"researchdata_availability":"unclear","publication_identifier":{"eissn":["1095-0753"],"issn":["1095-0761"]},"doi":"10.4310/ATMP.241031013250","date_published":"2024-10-30T00:00:00Z","arxiv":1,"article_type":"original","oa_version":"Preprint","publisher":"International Press of Boston","volume":28,"related_material":{"record":[{"relation":"dissertation_contains","id":"19540","status":"public"}]},"date_updated":"2026-10-16T08:35:25Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_created":"2024-12-15T23:01:51Z","language":[{"iso":"eng"}],"issue":"6","intvolume":"        28","fulldoi":"https://doi.org/10.4310/ATMP.241031013250","project":[{"name":"Random matrices beyond Wigner-Dyson-Mehta","call_identifier":"H2020","_id":"62796744-2b32-11ec-9570-940b20777f1d","grant_number":"101020331"}],"oa":1,"scopus_import":"1","department":[{"_id":"LaEr"}],"author":[{"orcid":"0000-0002-4901-7992","first_name":"Giorgio","id":"42198EFA-F248-11E8-B48F-1D18A9856A87","full_name":"Cipolloni, Giorgio","last_name":"Cipolloni"},{"full_name":"Erdös, László","last_name":"Erdös","orcid":"0000-0001-5366-9603","first_name":"László","id":"4DBD5372-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Henheik","full_name":"Henheik, Sven Joscha","orcid":"0000-0003-1106-327X","id":"31d731d7-d235-11ea-ad11-b50331c8d7fb","first_name":"Sven Joscha"}],"OA_type":"green","article_processing_charge":"No"},{"user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_created":"2024-07-28T22:01:09Z","date_updated":"2026-10-16T08:51:03Z","file_date_updated":"2024-07-29T11:02:48Z","ddc":["520"],"volume":970,"oa_version":"Published Version","article_type":"original","publisher":"IOP Publishing","scopus_import":"1","oa":1,"article_processing_charge":"Yes","department":[{"_id":"LiBu"}],"author":[{"last_name":"Bhattacharya","full_name":"Bhattacharya, Shatanik","first_name":"Shatanik"},{"last_name":"Das","full_name":"Das, Srijan B","id":"9ce7c423-dacf-11ed-8942-e09c6cb27149","first_name":"Srijan B","orcid":"0000-0003-0896-7972"},{"last_name":"Bugnet","full_name":"Bugnet, Lisa Annabelle","orcid":"0000-0003-0142-4000","id":"d9edb345-f866-11ec-9b37-d119b5234501","first_name":"Lisa Annabelle"},{"last_name":"Panda","full_name":"Panda, Subrata","first_name":"Subrata"},{"first_name":"Shravan M.","last_name":"Hanasoge","full_name":"Hanasoge, Shravan M."}],"article_number":"42","intvolume":"       970","issue":"1","project":[{"_id":"fc2ed2f7-9c52-11eb-aca3-c01059dda49c","call_identifier":"H2020","name":"IST-BRIDGE: International postdoctoral program","grant_number":"101034413"}],"fulldoi":"https://doi.org/10.3847/1538-4357/ad4708","language":[{"iso":"eng"}],"year":"2024","abstract":[{"text":"Magnetic fields in the stellar interiors are key candidates to explain observed core rotation rates inside solar-like stars along their evolution. Recently, asteroseismic estimates of radial magnetic field amplitudes near the hydrogen-burning shell (H-shell) inside about 24 red giants (RGs) have been obtained by measuring frequency splittings from their power spectra. Using general Lorentz-stress (magnetic) kernels, we investigated the potential for detectability of near-surface magnetism in a 1.3 M⊙ star of supersolar metallicity as it evolves from a mid subgiant to a late subgiant into an RG. Based on these sensitivity kernels, we decompose an RG into three zones—deep core, H-shell, and near-surface. The subgiants instead required decomposition into an inner core, an outer core, and a near-surface layer. Additionally, we find that for a low-frequency g-dominated dipolar mode in the presence of a typical stable magnetic field, ∼25% of the frequency shift comes from the H-shell and the remaining from deeper layers. The ratio of the subsurface tangential field to the radial field in the H-burning shell decides if subsurface fields may be potentially detectable. For p-dominated dipole modes close to vmax, this ratio is around two orders of magnitude smaller in subgiant phases than the corresponding RG. Further, with the availability of magnetic kernels, we propose lower limits of field strengths in crucial layers in our stellar model during its evolutionary phases. The theoretical prescription outlined here provides the first formal way to devise inverse problems for stellar magnetism and can be seamlessly employed for slow rotators.","lang":"eng"}],"title":"Detectability of axisymmetric magnetic fields from the core to the surface of oscillating post-main-sequence stars","status":"public","DOAJ_listed":"1","acknowledgement":"This project has received funding from the European Union's Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No. 101034413. S.\r\nB.D. acknowledges Prof. Jeroen Tromp at Princeton University for supporting a part of this work. S.M.H., S.B., and S.P. acknowledge support from the Department of Atomic Energy,\r\nGovernment of India, under Project Identification No. RTI 4002. The authors would like to thank the reviewer(s) and data editor for their constructive comments and suggestions. The\r\ngeneration of the stellar models was done using the Modules for Experiments in Stellar Astrophysics (MESA Paxton et al. 2011, 2013, 2015, 2018, 2019; we have used MESA version\r\nr22.05.1 for RG and r23.05.1 for SG models, MESA-SDK version x86_64-linux-22.6.1). The eigenfrequencies and eigenfunctions for this model were calculated using the GYRE\r\n(Townsend & Teitler 2013) code. The code to calculate the kernels and the splittings has been written completely in Python 3.8.16.","supplementarymaterial":"yes","_id":"17326","day":"15","citation":{"apa":"Bhattacharya, S., Das, S. B., Bugnet, L. A., Panda, S., &#38; Hanasoge, S. M. (2024). Detectability of axisymmetric magnetic fields from the core to the surface of oscillating post-main-sequence stars. <i>Astrophysical Journal</i>. IOP Publishing. <a href=\"https://doi.org/10.3847/1538-4357/ad4708\">https://doi.org/10.3847/1538-4357/ad4708</a>","ama":"Bhattacharya S, Das SB, Bugnet LA, Panda S, Hanasoge SM. Detectability of axisymmetric magnetic fields from the core to the surface of oscillating post-main-sequence stars. <i>Astrophysical Journal</i>. 2024;970(1). doi:<a href=\"https://doi.org/10.3847/1538-4357/ad4708\">10.3847/1538-4357/ad4708</a>","ieee":"S. Bhattacharya, S. B. Das, L. A. Bugnet, S. Panda, and S. M. Hanasoge, “Detectability of axisymmetric magnetic fields from the core to the surface of oscillating post-main-sequence stars,” <i>Astrophysical Journal</i>, vol. 970, no. 1. IOP Publishing, 2024.","ista":"Bhattacharya S, Das SB, Bugnet LA, Panda S, Hanasoge SM. 2024. Detectability of axisymmetric magnetic fields from the core to the surface of oscillating post-main-sequence stars. Astrophysical Journal. 970(1), 42.","short":"S. Bhattacharya, S.B. Das, L.A. Bugnet, S. Panda, S.M. Hanasoge, Astrophysical Journal 970 (2024).","chicago":"Bhattacharya, Shatanik, Srijan B Das, Lisa Annabelle Bugnet, Subrata Panda, and Shravan M. Hanasoge. “Detectability of Axisymmetric Magnetic Fields from the Core to the Surface of Oscillating Post-Main-Sequence Stars.” <i>Astrophysical Journal</i>. IOP Publishing, 2024. <a href=\"https://doi.org/10.3847/1538-4357/ad4708\">https://doi.org/10.3847/1538-4357/ad4708</a>.","mla":"Bhattacharya, Shatanik, et al. “Detectability of Axisymmetric Magnetic Fields from the Core to the Surface of Oscillating Post-Main-Sequence Stars.” <i>Astrophysical Journal</i>, vol. 970, no. 1, 42, IOP Publishing, 2024, doi:<a href=\"https://doi.org/10.3847/1538-4357/ad4708\">10.3847/1538-4357/ad4708</a>."},"das_tickbox":"0","quality_controlled":"1","publication":"Astrophysical Journal","publication_status":"published","has_accepted_license":"1","tmp":{"image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"file":[{"file_size":3912290,"date_updated":"2024-07-29T11:02:48Z","access_level":"open_access","date_created":"2024-07-29T11:02:48Z","content_type":"application/pdf","creator":"dernst","relation":"main_file","checksum":"acb42a87deecbc9228fbbe6a48a37ec6","success":1,"file_id":"17340","file_name":"2024_AstrophysicalJourn_Bhattacharya.pdf"}],"date_published":"2024-07-15T00:00:00Z","doi":"10.3847/1538-4357/ad4708","arxiv":1,"external_id":{"isi":["001270972500001"],"arxiv":["2404.17167"]},"researchdata_availability":"yes","publication_identifier":{"issn":["0004-637X"],"eissn":["1538-4357"]},"type":"journal_article","ec_funded":1,"isi":1,"month":"07"},{"supplementarymaterial":"yes","acknowledgement":"EJH, WJC, and GRD acknowledge the support of Science and Technology Facilities Council. MBN acknowledges support from the UK Space Agency. JMJO acknowledges support from NASA through the NASA Hubble Fellowship grant HST-HF2-51517.001, awarded by STScI (Space Telescope Science Institute), which is operated by the Association of Universities for Research in Astronomy, Incorporated, under NASA contract NAS5-26555. The authors acknowledge use of the Blue-BEAR HPC service at the University of Birmingham. This paper includes data collected by the Kepler mission and obtained from the MAST data archive at the Space Telescope Science Institute (STScI). Funding for the Kepler mission was provided by the NASA Science Mission Directorate. This work has made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/web/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC was provided by national institutions, in particular the institutions participating in the Gaia Multilateral Agreement. This paper received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (CartographY GA. 804752). SD and JB acknowledge support from the Centre National d’Etudes Spatiales (CNES).","DOAJ_listed":"1","OA_place":"publisher","status":"public","title":"Asteroseismic signatures of core magnetism and rotation in hundreds of low-luminosity red giants","dataavailabilitystatement":"Table 1 is available at the CDS. Light curves used in this work are available at Mikulski Archive for Space Telescopes at the Space Telescope Science Institute (MAST)1. Other intermediate data products will be made available upon reasonable request.","year":"2024","abstract":[{"lang":"eng","text":"Red Giant stars host solar-like oscillations which have mixed character, being sensitive to conditions both in the outer convection zone and deep within the interior. The properties of these modes are sensitive to both core rotation and magnetic fields. While asteroseismic studies of the former have been done on a large scale, studies of the latter are currently limited to tens of stars. We aim to produce the first large catalogue of both magnetic and rotational perturbations. We jointly constrain these parameters by devising an automated method for fitting the power spectra directly. We successfully apply the method to 302 low-luminosity red giants. We find a clear bimodality in core rotation rate. The primary peak is at δνrot = 0.32 μHz, and the secondary at δνrot = 0.47 μHz. Combining our results with literature values, we find that the percentage of stars rotating much more rapidly than the population average increases with evolutionary state. We measure magnetic splittings of 2σ significance in 23 stars. While the most extreme magnetic splitting values appear in stars with masses > 1.1M⊙, implying they formerly hosted a convective core, a small but statistically significant magnetic splitting is measured at lower masses. Asymmetry between the frequencies of a rotationally split multiplet has previously been used to diagnose the presence of a magnetic perturbation. We find that of the stars with a significant detection of magnetic perturbation, 43\\% do not show strong asymmetry. We find no strong evidence of correlation between the rotation and magnetic parameters."}],"tmp":{"image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"file":[{"file_size":2813008,"date_updated":"2024-10-07T09:14:03Z","access_level":"open_access","date_created":"2024-10-07T09:14:03Z","creator":"dernst","content_type":"application/pdf","relation":"main_file","checksum":"b79f3c6a5991516abbcc8d34fa4bfb5f","success":1,"file_id":"18182","file_name":"2024_MonthlyNRoyalAstronSoc_Hatt.pdf"}],"has_accepted_license":"1","publication_status":"published","citation":{"ieee":"E. J. Hatt <i>et al.</i>, “Asteroseismic signatures of core magnetism and rotation in hundreds of low-luminosity red giants,” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 534, no. 2. Oxford University Press, pp. 1060–1076, 2024.","ama":"Hatt EJ, Ong JMJ, Nielsen MB, et al. Asteroseismic signatures of core magnetism and rotation in hundreds of low-luminosity red giants. <i>Monthly Notices of the Royal Astronomical Society</i>. 2024;534(2):1060-1076. doi:<a href=\"https://doi.org/10.1093/mnras/stae2053\">10.1093/mnras/stae2053</a>","apa":"Hatt, E. J., Ong, J. M. J., Nielsen, M. B., Chaplin, W. J., Davies, G. R., Deheuvels, S., … Bugnet, L. A. (2024). Asteroseismic signatures of core magnetism and rotation in hundreds of low-luminosity red giants. <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University Press. <a href=\"https://doi.org/10.1093/mnras/stae2053\">https://doi.org/10.1093/mnras/stae2053</a>","chicago":"Hatt, Emily J., J. M.Joel Ong, Martin B. Nielsen, William J. Chaplin, Guy R. Davies, Sébastien Deheuvels, Jérôme Ballot, Gang Li, and Lisa Annabelle Bugnet. “Asteroseismic Signatures of Core Magnetism and Rotation in Hundreds of Low-Luminosity Red Giants.” <i>Monthly Notices of the Royal Astronomical Society</i>. Oxford University Press, 2024. <a href=\"https://doi.org/10.1093/mnras/stae2053\">https://doi.org/10.1093/mnras/stae2053</a>.","mla":"Hatt, Emily J., et al. “Asteroseismic Signatures of Core Magnetism and Rotation in Hundreds of Low-Luminosity Red Giants.” <i>Monthly Notices of the Royal Astronomical Society</i>, vol. 534, no. 2, Oxford University Press, 2024, pp. 1060–76, doi:<a href=\"https://doi.org/10.1093/mnras/stae2053\">10.1093/mnras/stae2053</a>.","ista":"Hatt EJ, Ong JMJ, Nielsen MB, Chaplin WJ, Davies GR, Deheuvels S, Ballot J, Li G, Bugnet LA. 2024. Asteroseismic signatures of core magnetism and rotation in hundreds of low-luminosity red giants. Monthly Notices of the Royal Astronomical Society. 534(2), 1060–1076.","short":"E.J. Hatt, J.M.J. Ong, M.B. Nielsen, W.J. Chaplin, G.R. Davies, S. Deheuvels, J. Ballot, G. Li, L.A. Bugnet, Monthly Notices of the Royal Astronomical Society 534 (2024) 1060–1076."},"day":"01","quality_controlled":"1","publication":"Monthly Notices of the Royal Astronomical Society","das_tickbox":"1","_id":"18172","publication_identifier":{"eissn":["1365-2966"],"issn":["0035-8711"]},"researchdata_availability":"yes","external_id":{"isi":["001320536900011"],"arxiv":["2409.01157"]},"arxiv":1,"date_published":"2024-10-01T00:00:00Z","doi":"10.1093/mnras/stae2053","isi":1,"month":"10","page":"1060-1076","type":"journal_article","date_updated":"2026-10-16T08:52:08Z","PlanS_conform":"1","date_created":"2024-10-06T22:01:11Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","publisher":"Oxford University Press","oa_version":"Published Version","article_type":"original","volume":534,"file_date_updated":"2024-10-07T09:14:03Z","ddc":["520"],"author":[{"last_name":"Hatt","full_name":"Hatt, Emily J.","first_name":"Emily J."},{"first_name":"J. M.Joel","last_name":"Ong","full_name":"Ong, J. M.Joel"},{"first_name":"Martin B.","full_name":"Nielsen, Martin B.","last_name":"Nielsen"},{"first_name":"William J.","full_name":"Chaplin, William J.","last_name":"Chaplin"},{"full_name":"Davies, Guy R.","last_name":"Davies","first_name":"Guy R."},{"last_name":"Deheuvels","full_name":"Deheuvels, Sébastien","first_name":"Sébastien"},{"last_name":"Ballot","full_name":"Ballot, Jérôme","first_name":"Jérôme"},{"full_name":"Li, Gang","last_name":"Li","first_name":"Gang"},{"last_name":"Bugnet","full_name":"Bugnet, Lisa Annabelle","orcid":"0000-0003-0142-4000","id":"d9edb345-f866-11ec-9b37-d119b5234501","first_name":"Lisa Annabelle"}],"OA_type":"gold","article_processing_charge":"Yes","department":[{"_id":"LiBu"}],"oa":1,"scopus_import":"1","language":[{"iso":"eng"}],"fulldoi":"https://doi.org/10.1093/mnras/stae2053","issue":"2","intvolume":"       534"},{"language":[{"iso":"eng"}],"issue":"S6","intvolume":"        20","fulldoi":"https://doi.org/10.1002/alz.085971","article_number":"e085971","oa":1,"article_processing_charge":"Yes (in subscription journal)","author":[{"first_name":"Olga","id":"5D8C9660-5D49-11EA-8188-567B3DDC885E","full_name":"Petrova, Olga","last_name":"Petrova"},{"full_name":"Trushin, Sergey A","last_name":"Trushin","first_name":"Sergey A"},{"full_name":"Nguyen, Thi Kim Oanh","last_name":"Nguyen","first_name":"Thi Kim Oanh"},{"first_name":"Mark","full_name":"Ostroot, Mark","last_name":"Ostroot"},{"full_name":"Schellenberg, Matthew","last_name":"Schellenberg","first_name":"Matthew"},{"first_name":"Graham","full_name":"Johnson, Graham","last_name":"Johnson"},{"first_name":"Eugenia","full_name":"Trushina, Eugenia","last_name":"Trushina"},{"last_name":"Sazanov","full_name":"Sazanov, Leonid A","id":"338D39FE-F248-11E8-B48F-1D18A9856A87","first_name":"Leonid A","orcid":"0000-0002-0977-7989"}],"OA_type":"hybrid","department":[{"_id":"LeSa"}],"oa_version":"Published Version","publisher":"Wiley","ddc":["570"],"file_date_updated":"2025-01-29T15:24:50Z","volume":20,"date_updated":"2026-10-16T08:42:53Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_created":"2025-01-29T15:21:40Z","month":"12","type":"other_academic_publication","publication_identifier":{"eissn":["1552-5279"],"issn":["1552-5260"]},"researchdata_availability":"no","doi":"10.1002/alz.085971","date_published":"2024-12-01T00:00:00Z","publication_status":"published","has_accepted_license":"1","tmp":{"image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"file":[{"file_size":70870,"date_updated":"2025-01-29T15:24:50Z","access_level":"open_access","date_created":"2025-01-29T15:24:50Z","creator":"dernst","content_type":"application/pdf","relation":"main_file","checksum":"e914bd5f3a701659ab79d497a122811f","success":1,"file_id":"18968","file_name":"2024_AlzheimerDementia_Petrova.pdf"}],"_id":"18967","day":"01","citation":{"apa":"Petrova, O., Trushin, S. A., Nguyen, T. K. O., Ostroot, M., Schellenberg, M., Johnson, G., … Sazanov, L. A. (2024). <i>Structure‐activity relationship study of neuroprotective complex I inhibitor CP2</i>. <i>Alzheimer’s &#38; Dementia</i> (Vol. 20). Wiley. <a href=\"https://doi.org/10.1002/alz.085971\">https://doi.org/10.1002/alz.085971</a>","ieee":"O. Petrova <i>et al.</i>, <i>Structure‐activity relationship study of neuroprotective complex I inhibitor CP2</i>, vol. 20, no. S6. Wiley, 2024.","ama":"Petrova O, Trushin SA, Nguyen TKO, et al. <i>Structure‐activity Relationship Study of Neuroprotective Complex I Inhibitor CP2</i>. Vol 20. Wiley; 2024. doi:<a href=\"https://doi.org/10.1002/alz.085971\">10.1002/alz.085971</a>","ista":"Petrova O, Trushin SA, Nguyen TKO, Ostroot M, Schellenberg M, Johnson G, Trushina E, Sazanov LA. 2024. Structure‐activity relationship study of neuroprotective complex I inhibitor CP2, Wiley,p.","short":"O. Petrova, S.A. Trushin, T.K.O. Nguyen, M. Ostroot, M. Schellenberg, G. Johnson, E. Trushina, L.A. Sazanov, Structure‐activity Relationship Study of Neuroprotective Complex I Inhibitor CP2, Wiley, 2024.","mla":"Petrova, Olga, et al. “Structure‐activity Relationship Study of Neuroprotective Complex I Inhibitor CP2.” <i>Alzheimer’s &#38; Dementia</i>, vol. 20, no. S6, e085971, Wiley, 2024, doi:<a href=\"https://doi.org/10.1002/alz.085971\">10.1002/alz.085971</a>.","chicago":"Petrova, Olga, Sergey A Trushin, Thi Kim Oanh Nguyen, Mark Ostroot, Matthew Schellenberg, Graham Johnson, Eugenia Trushina, and Leonid A Sazanov. <i>Structure‐activity Relationship Study of Neuroprotective Complex I Inhibitor CP2</i>. <i>Alzheimer’s &#38; Dementia</i>. Vol. 20. Wiley, 2024. <a href=\"https://doi.org/10.1002/alz.085971\">https://doi.org/10.1002/alz.085971</a>."},"quality_controlled":"1","publication":"Alzheimer's & Dementia","das_tickbox":"0","OA_place":"publisher","supplementarymaterial":"no","abstract":[{"lang":"eng","text":"Background: We identified small molecule tricyclic pyrone compound CP2 as a mild mitochondrial complex I (MCI) inhibitor that induces neuroprotection in multiple mouse models of AD. One of the major concerns while targeting mitochondria is the production of reactive oxygen species (ROS). CP2 consists of two diastereoisomers, D1 and D2, with distinct activity and toxicity profiles. This study was designed to understand how structure of D1 and D2 affects their binding to MCI and the consequential impact on ROS production.\r\n\r\nMethod: The X-ray crystallography and cryo-electron microscopy (cryo-EM) at global resolution of 3.25-3.27Å were employed to identify the molecular structure of D1 and D2 and the D1 binding to the isolated ovine MCI. The assessment of the MCI inhibition and the extent of ROS generation were done in isolated MCI and human neuroblastoma MC65 cells using flow cytometry, a Seahorse extracellular flux analyzer, and the kinetic studies.\r\n\r\nResult: In the closed conformation of MCI, D1 selectively binds to the deep Quinone-site (Qd) but not to the shallow Q-site (Qs), sharing the same binding pocket as rotenone. In the open MCI state, D1 exclusively binds to the Qs in contrast to rotenone, which binds Qd and Qs in both closed and open states. At the same concentrations, D1 inhibits respiration to a greater extent compared to D2 (5:1 ratio) and produces higher level of ROS.\r\n\r\nConclusion:Cryo-EM unambiguously identified binding of D1 to both the Qd and Qs sites, contingent upon the conformational state of MCI. In contrast to rotenone, D1 binds Qd only in the closed conformation during catalytic cycle, leading to mild inhibition. Superimposing X-ray crystallography data of D1 and D2 onto cryo-EM data suggests that the orientation of the methyl group in D2 induces a flatter conformation, resulting in lower binding affinity to MCI, which correlates with lower inhibition and toxicity compared to D1. At physiologically relevant concentrations, CP2 (D1:D2 = 1:1) demonstrates low MCI inhibition yielding negligible ROS levels. This observation provides new insight into the absence of toxicity associated with CP2 treatment in vivo, further highlighting feasibility for the development of safe and efficacious MCI inhibitors."}],"year":"2024","title":"Structure‐activity relationship study of neuroprotective complex I inhibitor CP2","status":"public"},{"date_published":"2024-12-01T00:00:00Z","doi":"10.1186/s13287-024-03960-5","publication_identifier":{"eissn":["1757-6512"]},"researchdata_availability":"yes","external_id":{"pmid":["39551765"],"isi":["001356479400001"]},"type":"journal_article","month":"12","isi":1,"status":"public","title":"Prolonged cultivation enhances the stimulatory activity of hiPSC mesenchymal progenitor-derived conditioned medium","year":"2024","abstract":[{"text":"Background: Human induced pluripotent stem cells represent a scalable source of youthful tissue progenitors and secretomes for regenerative therapies. The aim of our study was to investigate the potential of conditioned medium (CM) from hiPSC-mesenchymal progenitors (hiPSC-MPs) to stimulate osteogenic differentiation of human bone marrow-derived mesenchymal stromal cells (MSCs). We also investigated whether prolonged cultivation or osteogenic pre-differentiation of hiPSC-MPs could enhance the stimulatory activity of CM.\r\nMethods: MSCs were isolated from 13 donors (age 20–90 years). CM derived from hiPSC-MPs was added to the MSC cultures and the effects on proliferation and osteogenic differentiation were examined after 14 days and 6 weeks. The stimulatory activity of hiPSC-MP-CM was compared with the activity of MSC-derived CM and with the activity of CM prepared from hiPSC-MPs pre-cultured in growth or osteogenic medium for 14 days. Comparative proteomic analysis of CM was performed to gain insight into the molecular components responsible for the stimulatory activity.\r\nResults: Primary bone marrow-derived MSC exhibited variability, with a tendency towards lower proliferation and tri-lineage differentiation in older donors. hiPSC-MP-CM increased the proliferation and alkaline phosphatase activity of MSC from several adult/aged donors after 14 days of continuous supplementation under osteogenic conditions. However, CM supplementation failed to improve the mineralization of MSC pellets after 6 weeks under osteogenic conditions. hiPSC-MP-CM showed greater enhancement of proliferation and ALP activity than CM derived from bone marrow-derived MSCs. Moreover, 14-day cultivation but not osteogenic pre-differentiation of hiPSC-MPs strongly enhanced CM stimulatory activity. Quantitative proteomic analysis of d14-CM revealed a distinct profile of components that formed a highly interconnected associations network with two clusters, one functionally associated with binding and organization of actin/cytoskeletal components and the other with structural constituents of the extracellular matrix, collagen, and growth factor binding. Several hub proteins were identified that were reported to have functions in cell-extracellular matrix interaction, osteogenic differentiation and development.\r\nConclusions: Our data show that hiPSC-MP-CM enhances early osteogenic differentiation of human bone marrow-derived MSCs and that prolonged cultivation of hiPSC-MPs enhances CM-stimulatory activity. Proteomic analysis of the upregulated protein components provides the basis for further optimization of hiPSC-MP-CM for bone regenerative therapies.","lang":"eng"}],"dataavailabilitystatement":"All data generated and analysed during this study are included in this published article and its supplementary information files. The mass spectrometry proteomics data have been deposited to the ProteomeXchange Consortium via the PRIDE partner repository with the dataset identifier PXD052766 (access details are provided in Suppl. Data File 1). The raw datasets used and/or analysed during the current study are available from the corresponding author on reasonable request.","supplementarymaterial":"yes","acknowledgement":"We thank the personnel of the Lorenz-Böhler-Unfallkrankenhaus for providing the human tissue waste for primary cell isolation and the New York Stem Cell Foundation Research Institute for providing the human induced pluripotent stem cell line 1013 A and its mesenchymal progenitors. We also thank all our colleagues at the Ludwig Boltzmann Institute for Traumatology for their suggestions and ongoing support of the project. InstaText writing tool (https://instatext.io) was used to edit the English language of the final manuscript.\r\nThis work has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie actions (grant agreement No. 657716) and the Transforming European Industry call H2020-NMBP-TRIND-2020 (grant agreement No. 953134), as well as by the FFG Industrienahe Dissertation program (grant agreement No. 867803 and 853056), the FEMtech Praktika program (grant agreement No. 852154, 868917 and 877951) and the Production of the Future program (grant agreement No. 877452).","DOAJ_listed":"1","OA_place":"publisher","quality_controlled":"1","publication":"Stem Cell Research and Therapy","das_tickbox":"1","citation":{"ista":"Marolt Presen D, Goeschl V, Hanetseder D, Ogrin L, Stetco AL, Tansek A, Pozenel L, Bruszel B, Mitulovic G, Oesterreicher J, Zipperle J, Schaedl B, Holnthoner W, Grillari J, Redl H. 2024. Prolonged cultivation enhances the stimulatory activity of hiPSC mesenchymal progenitor-derived conditioned medium. Stem Cell Research and Therapy. 15, 434.","short":"D. Marolt Presen, V. Goeschl, D. Hanetseder, L. Ogrin, A.L. Stetco, A. Tansek, L. Pozenel, B. Bruszel, G. Mitulovic, J. Oesterreicher, J. Zipperle, B. Schaedl, W. Holnthoner, J. Grillari, H. Redl, Stem Cell Research and Therapy 15 (2024).","mla":"Marolt Presen, Darja, et al. “Prolonged Cultivation Enhances the Stimulatory Activity of HiPSC Mesenchymal Progenitor-Derived Conditioned Medium.” <i>Stem Cell Research and Therapy</i>, vol. 15, 434, Springer Nature, 2024, doi:<a href=\"https://doi.org/10.1186/s13287-024-03960-5\">10.1186/s13287-024-03960-5</a>.","chicago":"Marolt Presen, Darja, Vanessa Goeschl, Dominik Hanetseder, Laura Ogrin, Alexandra Larissa Stetco, Anja Tansek, Laura Pozenel, et al. “Prolonged Cultivation Enhances the Stimulatory Activity of HiPSC Mesenchymal Progenitor-Derived Conditioned Medium.” <i>Stem Cell Research and Therapy</i>. Springer Nature, 2024. <a href=\"https://doi.org/10.1186/s13287-024-03960-5\">https://doi.org/10.1186/s13287-024-03960-5</a>.","apa":"Marolt Presen, D., Goeschl, V., Hanetseder, D., Ogrin, L., Stetco, A. L., Tansek, A., … Redl, H. (2024). Prolonged cultivation enhances the stimulatory activity of hiPSC mesenchymal progenitor-derived conditioned medium. <i>Stem Cell Research and Therapy</i>. Springer Nature. <a href=\"https://doi.org/10.1186/s13287-024-03960-5\">https://doi.org/10.1186/s13287-024-03960-5</a>","ama":"Marolt Presen D, Goeschl V, Hanetseder D, et al. Prolonged cultivation enhances the stimulatory activity of hiPSC mesenchymal progenitor-derived conditioned medium. <i>Stem Cell Research and Therapy</i>. 2024;15. doi:<a href=\"https://doi.org/10.1186/s13287-024-03960-5\">10.1186/s13287-024-03960-5</a>","ieee":"D. Marolt Presen <i>et al.</i>, “Prolonged cultivation enhances the stimulatory activity of hiPSC mesenchymal progenitor-derived conditioned medium,” <i>Stem Cell Research and Therapy</i>, vol. 15. Springer Nature, 2024."},"day":"01","_id":"18581","file":[{"file_name":"2024_StemCellResearch_Presen.pdf","file_id":"18641","success":1,"checksum":"91edba8edde30d781dce89fdd5cadc39","relation":"main_file","content_type":"application/pdf","creator":"dernst","date_created":"2024-12-10T08:28:17Z","access_level":"open_access","date_updated":"2024-12-10T08:28:17Z","file_size":6690494}],"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode","short":"CC BY-NC-ND (4.0)","name":"Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)","image":"/images/cc_by_nc_nd.png"},"has_accepted_license":"1","publication_status":"published","OA_type":"gold","article_processing_charge":"Yes","author":[{"last_name":"Marolt Presen","full_name":"Marolt Presen, Darja","first_name":"Darja"},{"last_name":"Goeschl","full_name":"Goeschl, Vanessa","first_name":"Vanessa"},{"first_name":"Dominik","full_name":"Hanetseder, Dominik","last_name":"Hanetseder"},{"last_name":"Ogrin","full_name":"Ogrin, Laura","first_name":"Laura"},{"full_name":"Stetco, Alexandra Larissa","last_name":"Stetco","first_name":"Alexandra Larissa"},{"first_name":"Anja","last_name":"Tansek","full_name":"Tansek, Anja"},{"first_name":"Laura","full_name":"Pozenel, Laura","last_name":"Pozenel"},{"id":"70abbbb3-88ea-11ec-8e0a-e8c939944834","first_name":"Bella","last_name":"Bruszel","full_name":"Bruszel, Bella"},{"full_name":"Mitulovic, Goran","last_name":"Mitulovic","first_name":"Goran"},{"first_name":"Johannes","full_name":"Oesterreicher, Johannes","last_name":"Oesterreicher"},{"last_name":"Zipperle","full_name":"Zipperle, Johannes","first_name":"Johannes"},{"full_name":"Schaedl, Barbara","last_name":"Schaedl","first_name":"Barbara"},{"full_name":"Holnthoner, Wolfgang","last_name":"Holnthoner","first_name":"Wolfgang"},{"last_name":"Grillari","full_name":"Grillari, Johannes","first_name":"Johannes"},{"first_name":"Heinz","full_name":"Redl, Heinz","last_name":"Redl"}],"department":[{"_id":"LifeSc"}],"oa":1,"scopus_import":"1","article_number":"434","fulldoi":"https://doi.org/10.1186/s13287-024-03960-5","intvolume":"        15","language":[{"iso":"eng"}],"date_created":"2024-11-24T23:01:47Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_updated":"2026-10-16T08:56:29Z","volume":15,"ddc":["570"],"file_date_updated":"2024-12-10T08:28:17Z","pmid":1,"publisher":"Springer Nature","article_type":"original","oa_version":"Published Version"},{"file_date_updated":"2025-01-27T13:18:41Z","ddc":["520"],"volume":689,"article_type":"original","oa_version":"Published Version","publisher":"EDP Sciences","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_created":"2025-01-27T13:12:44Z","date_updated":"2026-10-16T08:55:46Z","intvolume":"       689","fulldoi":"https://doi.org/10.1051/0004-6361/202449893","language":[{"iso":"eng"}],"oa":1,"scopus_import":"1","OA_type":"hybrid","department":[{"_id":"LiBu"}],"article_processing_charge":"No","author":[{"first_name":"S. N.","full_name":"Breton, S. N.","last_name":"Breton"},{"first_name":"A. F.","full_name":"Lanza, A. F.","last_name":"Lanza"},{"first_name":"S.","last_name":"Messina","full_name":"Messina, S."},{"full_name":"Pagano, I.","last_name":"Pagano","first_name":"I."},{"orcid":"0000-0003-0142-4000","first_name":"Lisa Annabelle","id":"d9edb345-f866-11ec-9b37-d119b5234501","full_name":"Bugnet, Lisa Annabelle","last_name":"Bugnet"},{"full_name":"Corsaro, E.","last_name":"Corsaro","first_name":"E."},{"first_name":"R. A.","full_name":"García, R. A.","last_name":"García"},{"first_name":"S.","last_name":"Mathur","full_name":"Mathur, S."},{"first_name":"A. R. G.","full_name":"Santos, A. R. G.","last_name":"Santos"},{"first_name":"S.","last_name":"Aigrain","full_name":"Aigrain, S."},{"first_name":"L.","full_name":"Amard, L.","last_name":"Amard"},{"full_name":"Brun, A. S.","last_name":"Brun","first_name":"A. S."},{"full_name":"Degott, L.","last_name":"Degott","first_name":"L."},{"first_name":"Q.","full_name":"Noraz, Q.","last_name":"Noraz"},{"full_name":"Palakkatharappil, D. B.","last_name":"Palakkatharappil","first_name":"D. B."},{"full_name":"Panetier, E.","last_name":"Panetier","first_name":"E."},{"full_name":"Strugarek, A.","last_name":"Strugarek","first_name":"A."},{"first_name":"K.","full_name":"Belkacem, K.","last_name":"Belkacem"},{"full_name":"Goupil, M.-J","last_name":"Goupil","first_name":"M.-J"},{"full_name":"Ouazzani, R. M.","last_name":"Ouazzani","first_name":"R. M."},{"first_name":"J.","last_name":"Philidet","full_name":"Philidet, J."},{"first_name":"C.","full_name":"Renié, C.","last_name":"Renié"},{"first_name":"O.","last_name":"Roth","full_name":"Roth, O."}],"article_number":"A229","_id":"18904","quality_controlled":"1","publication":"Astronomy & Astrophysics","das_tickbox":"0","day":"01","citation":{"apa":"Breton, S. N., Lanza, A. F., Messina, S., Pagano, I., Bugnet, L. A., Corsaro, E., … Roth, O. (2024). Measuring stellar surface rotation and activity with the PLATO mission. I. Strategy and application to simulated light curves. <i>Astronomy &#38; Astrophysics</i>. EDP Sciences. <a href=\"https://doi.org/10.1051/0004-6361/202449893\">https://doi.org/10.1051/0004-6361/202449893</a>","ama":"Breton SN, Lanza AF, Messina S, et al. Measuring stellar surface rotation and activity with the PLATO mission. I. Strategy and application to simulated light curves. <i>Astronomy &#38; Astrophysics</i>. 2024;689. doi:<a href=\"https://doi.org/10.1051/0004-6361/202449893\">10.1051/0004-6361/202449893</a>","ieee":"S. N. Breton <i>et al.</i>, “Measuring stellar surface rotation and activity with the PLATO mission. I. Strategy and application to simulated light curves,” <i>Astronomy &#38; Astrophysics</i>, vol. 689. EDP Sciences, 2024.","short":"S.N. Breton, A.F. Lanza, S. Messina, I. Pagano, L.A. Bugnet, E. Corsaro, R.A. García, S. Mathur, A.R.G. Santos, S. Aigrain, L. Amard, A.S. Brun, L. Degott, Q. Noraz, D.B. Palakkatharappil, E. Panetier, A. Strugarek, K. Belkacem, M.-J. Goupil, R.M. Ouazzani, J. Philidet, C. Renié, O. Roth, Astronomy &#38; Astrophysics 689 (2024).","ista":"Breton SN, Lanza AF, Messina S, Pagano I, Bugnet LA, Corsaro E, García RA, Mathur S, Santos ARG, Aigrain S, Amard L, Brun AS, Degott L, Noraz Q, Palakkatharappil DB, Panetier E, Strugarek A, Belkacem K, Goupil M-J, Ouazzani RM, Philidet J, Renié C, Roth O. 2024. Measuring stellar surface rotation and activity with the PLATO mission. I. Strategy and application to simulated light curves. Astronomy &#38; Astrophysics. 689, A229.","mla":"Breton, S. N., et al. “Measuring Stellar Surface Rotation and Activity with the PLATO Mission. I. Strategy and Application to Simulated Light Curves.” <i>Astronomy &#38; Astrophysics</i>, vol. 689, A229, EDP Sciences, 2024, doi:<a href=\"https://doi.org/10.1051/0004-6361/202449893\">10.1051/0004-6361/202449893</a>.","chicago":"Breton, S. N., A. F. Lanza, S. Messina, I. Pagano, Lisa Annabelle Bugnet, E. Corsaro, R. A. García, et al. “Measuring Stellar Surface Rotation and Activity with the PLATO Mission. I. Strategy and Application to Simulated Light Curves.” <i>Astronomy &#38; Astrophysics</i>. EDP Sciences, 2024. <a href=\"https://doi.org/10.1051/0004-6361/202449893\">https://doi.org/10.1051/0004-6361/202449893</a>."},"publication_status":"published","has_accepted_license":"1","file":[{"content_type":"application/pdf","creator":"dernst","access_level":"open_access","date_created":"2025-01-27T13:18:41Z","file_size":6212007,"date_updated":"2025-01-27T13:18:41Z","file_name":"2024_AstronomyAstrophysics_Breton.pdf","success":1,"file_id":"18905","relation":"main_file","checksum":"5c871ba7370a507ed6ea9fb2304d8263"}],"tmp":{"image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"abstract":[{"lang":"eng","text":"The Planetary Transits and Oscillations of stars mission (PLATO) will allow us to measure surface rotation and monitor photometric activity of tens of thousands of main sequence solar-type and subgiant stars. This paper is the first of a series dedicated to the preparation of the analysis of stellar surface rotation and photospheric activity with the near-future PLATO data. We describe in this work the strategy that will be implemented in the PLATO pipeline to measure stellar surface rotation, photometric activity, and long-term modulations. The algorithms are applied on both noise-free and noisy simulations of solar-type stars, which include activity cycles, latitudinal differential rotation, and spot evolution. PLATO simulated systematics are included in the noisy light curves. We show that surface rotation periods can be recovered with confidence for most of the stars with only six months of observations and that the recovery rate of the analysis significantly improves as additional observations are collected. This means that the first PLATO data release will already provide a substantial set of measurements for this quantity, with a significant refinement on their quality as the instrument obtains longer light curves. Measuring the Schwabe-like magnetic activity cycle during the mission will require that the same field be observed over a significant timescale (more than four years). Nevertheless, PLATO will provide a vast and robust sample of solar-type stars with constraints on the activity-cycle length. Such a sample is lacking from previous missions dedicated to space photometry."}],"year":"2024","status":"public","title":"Measuring stellar surface rotation and activity with the PLATO mission. I. Strategy and application to simulated light curves","acknowledgement":"This work presents results from the European Space Agency (ESA) space mission PLATO. The PLATO payload, the PLATO Ground Segment and PLATO data processing are joint developments of ESA and the PLATO Mission Consortium (PMC). Funding for the PMC is provided at national levels, in particular by countries participating in the PLATO Multilateral Agreement (Austria, Belgium, Czech Republic, Denmark, France, Germany, Italy, Netherlands, Portugal, Spain, Sweden, Switzerland, Norway, and United Kingdom) and institutions from Brazil. Members of the PLATO Consortium can be found at https://platomission.com. The ESA PLATO mission website is https://www.cosmos.esa.int/plato. The authors thank the teams working for PLATO for all their work. They acknowledge the critical reading and the constructive comments from the anonymous referee that significantly allowed improving the original version of this paper. They finally thank R. Samadi for helpful advice and suggestions concerning the PSLS abilities. S.N.B, A.F.L, S.Me, I.P and E.C acknowledge support from PLATO ASI-INAF agreement no. 2022-28-HH.0 “PLATO Fase D”. S.N.B, L.A, A.S.B, Q.N, and A.S acknowledge financial support by ERC Whole Sun Synergy grant #810218. S.N.B, R.A.G, L.A, A.S.B, Q.N., D.B.P, E.P, and A.S acknowledge the support from PLATO CNES grant. R.A.G, D.B.P, and E.P acknowledge the support from SoHO/GOLF CNES grant. A.S.B, Q.N, and A.S acknowledge the support from INSU/PNST grant and Solar Orbiter CNES grant. A.S acknowledges funding from from the European Union’s Horizon-2020 research and innovation program (grant agreement no. 776403 ExoplANETS-A) and the Programme National de Planétologie (PNP). A.R.G.S acknowledges the support from the FCT through national funds and FEDER through COMPETE2020 (UIDB/04434/2020, UIDP/04434/2020, 2022.03993.PTDC) and the support from the FCT through the work contract No. 2020.02480.CEECIND/CP1631/CT0001. S.Ma acknowledges support from the Spanish Ministry of Science and Innovation (MICINN) with the Ramón y Cajal fellowship no. RYC-2015-17697 and through AEI under the Severo Ochoa Centres of Excellence Programme 2020–2023 (CEX2019-000920-S). S.Ma acknowledges support from the Spanish Ministry of Science and Innovation (MICINN) with the grant no. PID2019-107187GB-I00. M.J.G., K.B., R.M.O, J.P, O.R., C.R. acknowledge support from CNES. The computations were performed with the IRFU/CEA Saclay server facilities, funded by ERC Synergy grant WholeSun No.810218, the P2IO Labex emergence project FlarePredict, and CNES PLATO funds. Software:star-privateer (this work), pyspot (Aigrain et al. 2015), PSLS (Samadi et al. 2019), numpy (Harris et al. 2020), matplotlib (Hunter 2007), scipy (Virtanen et al. 2020), astropy (Astropy Collaboration 2022), pandas (Wes McKinney 2010; The pandas development team 2020), scikit-learn (Pedregosa et al. 2011).","OA_place":"publisher","supplementarymaterial":"yes","type":"journal_article","month":"09","isi":1,"doi":"10.1051/0004-6361/202449893","date_published":"2024-09-01T00:00:00Z","arxiv":1,"external_id":{"isi":["001366206400007"],"arxiv":["2407.03709"]},"researchdata_availability":"yes","publication_identifier":{"issn":["0004-6361"],"eissn":["1432-0746"]}},{"oa_version":"Published Version","article_type":"original","publisher":"IOP Publishing","file_date_updated":"2024-10-21T11:05:11Z","ddc":["520"],"volume":973,"date_updated":"2026-10-16T08:52:49Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_created":"2024-10-13T22:01:49Z","language":[{"iso":"eng"}],"issue":"2","intvolume":"       973","fulldoi":"https://doi.org/10.3847/2041-8213/ad6b29","article_number":"L53","scopus_import":"1","oa":1,"author":[{"last_name":"Oza","full_name":"Oza, Apurva V.","first_name":"Apurva V."},{"first_name":"Julia V.","full_name":"Seidel, Julia V.","last_name":"Seidel"},{"first_name":"H. Jens","last_name":"Hoeijmakers","full_name":"Hoeijmakers, H. Jens"},{"first_name":"Athira","last_name":"Unni","full_name":"Unni, Athira"},{"full_name":"Kesseli, Aurora Y.","last_name":"Kesseli","first_name":"Aurora Y."},{"first_name":"Carl A.","last_name":"Schmidt","full_name":"Schmidt, Carl A."},{"full_name":"Sivarani, Thirupathi","last_name":"Sivarani","first_name":"Thirupathi"},{"first_name":"Aaron","last_name":"Bello-Arufe","full_name":"Bello-Arufe, Aaron"},{"full_name":"Gebek, Andrea","last_name":"Gebek","first_name":"Andrea"},{"full_name":"Meyer Zu Westram, Moritz","last_name":"Meyer Zu Westram","first_name":"Moritz"},{"last_name":"Sousa","full_name":"Sousa, Sérgio G.","first_name":"Sérgio G."},{"last_name":"Lopes","full_name":"Lopes, Rosaly M.C.","first_name":"Rosaly M.C."},{"last_name":"Hu","full_name":"Hu, Renyu","first_name":"Renyu"},{"first_name":"Katherine","full_name":"De Kleer, Katherine","last_name":"De Kleer"},{"last_name":"Fisher","full_name":"Fisher, Chloe","first_name":"Chloe"},{"first_name":"Sébastien","last_name":"Charnoz","full_name":"Charnoz, Sébastien"},{"first_name":"Ashley D.","full_name":"Baker, Ashley D.","last_name":"Baker"},{"first_name":"Samuel P.","last_name":"Halverson","full_name":"Halverson, Samuel P."},{"last_name":"Schneider","full_name":"Schneider, Nick M.","first_name":"Nick M."},{"last_name":"Psaridi","full_name":"Psaridi, Angelica","first_name":"Angelica"},{"first_name":"Aurélien","last_name":"Wyttenbach","full_name":"Wyttenbach, Aurélien"},{"id":"a8df4360-4328-11ee-8f1a-e502d0c83fc2","first_name":"Santiago","orcid":"0000-0002-3150-8988","last_name":"Torres Rodriguez","full_name":"Torres Rodriguez, Santiago"},{"first_name":"Ishita","last_name":"Bhatnagar","full_name":"Bhatnagar, Ishita"},{"first_name":"Robert E.","last_name":"Johnson","full_name":"Johnson, Robert E."}],"OA_type":"gold","article_processing_charge":"Yes","department":[{"_id":"LiBu"}],"publication_status":"published","has_accepted_license":"1","tmp":{"image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"file":[{"checksum":"23eea2a6a0519694a84998957ad7b7fb","relation":"main_file","file_name":"2024_AstrophysicalJourn_Oza.pdf","file_id":"18456","success":1,"date_updated":"2024-10-21T11:05:11Z","file_size":1249747,"creator":"dernst","content_type":"application/pdf","date_created":"2024-10-21T11:05:11Z","access_level":"open_access"}],"_id":"18306","citation":{"mla":"Oza, Apurva V., et al. “Redshifted Sodium Transient near Exoplanet Transit.” <i>Astrophysical Journal Letters</i>, vol. 973, no. 2, L53, IOP Publishing, 2024, doi:<a href=\"https://doi.org/10.3847/2041-8213/ad6b29\">10.3847/2041-8213/ad6b29</a>.","chicago":"Oza, Apurva V., Julia V. Seidel, H. Jens Hoeijmakers, Athira Unni, Aurora Y. Kesseli, Carl A. Schmidt, Thirupathi Sivarani, et al. “Redshifted Sodium Transient near Exoplanet Transit.” <i>Astrophysical Journal Letters</i>. IOP Publishing, 2024. <a href=\"https://doi.org/10.3847/2041-8213/ad6b29\">https://doi.org/10.3847/2041-8213/ad6b29</a>.","ista":"Oza AV, Seidel JV, Hoeijmakers HJ, Unni A, Kesseli AY, Schmidt CA, Sivarani T, Bello-Arufe A, Gebek A, Meyer Zu Westram M, Sousa SG, Lopes RMC, Hu R, De Kleer K, Fisher C, Charnoz S, Baker AD, Halverson SP, Schneider NM, Psaridi A, Wyttenbach A, Torres Rodriguez S, Bhatnagar I, Johnson RE. 2024. Redshifted sodium transient near exoplanet transit. Astrophysical Journal Letters. 973(2), L53.","short":"A.V. Oza, J.V. Seidel, H.J. Hoeijmakers, A. Unni, A.Y. Kesseli, C.A. Schmidt, T. Sivarani, A. Bello-Arufe, A. Gebek, M. Meyer Zu Westram, S.G. Sousa, R.M.C. Lopes, R. Hu, K. De Kleer, C. Fisher, S. Charnoz, A.D. Baker, S.P. Halverson, N.M. Schneider, A. Psaridi, A. Wyttenbach, S. Torres Rodriguez, I. Bhatnagar, R.E. Johnson, Astrophysical Journal Letters 973 (2024).","ieee":"A. V. Oza <i>et al.</i>, “Redshifted sodium transient near exoplanet transit,” <i>Astrophysical Journal Letters</i>, vol. 973, no. 2. IOP Publishing, 2024.","ama":"Oza AV, Seidel JV, Hoeijmakers HJ, et al. Redshifted sodium transient near exoplanet transit. <i>Astrophysical Journal Letters</i>. 2024;973(2). doi:<a href=\"https://doi.org/10.3847/2041-8213/ad6b29\">10.3847/2041-8213/ad6b29</a>","apa":"Oza, A. V., Seidel, J. V., Hoeijmakers, H. J., Unni, A., Kesseli, A. Y., Schmidt, C. A., … Johnson, R. E. (2024). Redshifted sodium transient near exoplanet transit. <i>Astrophysical Journal Letters</i>. IOP Publishing. <a href=\"https://doi.org/10.3847/2041-8213/ad6b29\">https://doi.org/10.3847/2041-8213/ad6b29</a>"},"day":"01","quality_controlled":"1","publication":"Astrophysical Journal Letters","das_tickbox":"1","DOAJ_listed":"1","acknowledgement":"The research described in this Letter was carried out in part at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics Space Administration, © 2024. California Institute of Technology. Government sponsorship acknowledged. A.V.O. and J.V.S. thank M. Lendl for constraints and discussions on the mass of WASP-49 A b. S.G.S acknowledges the support from FCT through Investigador FCT contract nr. CEECIND/00826/2018 and POPH/FSE (EC).","OA_place":"publisher","supplementarymaterial":"no","dataavailabilitystatement":"ESO data is available publicly on ESO’s science archive facility at archive.eso.org/eso/eso_archive_main.html.","abstract":[{"lang":"eng","text":"Neutral sodium (Na i) is an alkali metal with a favorable absorption cross section such that tenuous gases are easily illuminated at select transiting exoplanet systems. We examine both the time-averaged and time-series alkali spectral flux individually, over 4 nights at a hot Saturn system on a ∼2.8 day orbit about a Sun-like star WASP-49 A. Very Large Telescope/ESPRESSO observations are analyzed, providing new constraints. We recover the previously confirmed residual sodium flux uniquely when averaged, whereas night-to-night Na i varies by more than an order of magnitude. On HARPS/3.6 m Epoch II, we report a Doppler redshift at vΓ,NaD = + 9.7 ± 1.6 km s−1 with respect to the planet's rest frame. Upon examining the lightcurves, we confirm night-to-night variability, on the order of ∼1%–4% in NaD, rarely coinciding with exoplanet transit, not readily explained by stellar activity, starspots, tellurics, or the interstellar medium. Coincident with the ∼+10 km s−1 Doppler redshift, we detect a transient sodium absorption event dFNaD/F⋆ = 3.6% ± 1% at a relative difference of ΔFNaD(t) ∼ 4.4% ± 1%, lasting ΔtNaD ≳ 40 minutes. Since exoplanetary alkali signatures are blueshifted due to the natural vector of radiation pressure, estimated here at roughly ∼−5.7 km s−1, the radial velocity is rather at +15.4 km s−1, far larger than any known exoplanet system. Given that the redshift magnitude vΓ is in between the Roche limit and dynamically stable satellite orbits, the transient sodium may be a putative indication of a natural satellite orbiting WASP-49 A b."}],"year":"2024","title":"Redshifted sodium transient near exoplanet transit","status":"public","isi":1,"month":"10","type":"journal_article","external_id":{"arxiv":["2409.19844"],"isi":["001322169500001"]},"publication_identifier":{"eissn":["2041-8213"],"issn":["2041-8205"]},"researchdata_availability":"yes","date_published":"2024-10-01T00:00:00Z","doi":"10.3847/2041-8213/ad6b29","arxiv":1},{"oa_version":"Published Version","article_type":"original","publisher":"EDP Sciences","file_date_updated":"2024-11-11T09:01:11Z","ddc":["520"],"volume":690,"related_material":{"record":[{"id":"22802","relation":"research_data","status":"public"}]},"date_updated":"2026-10-16T08:53:44Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_created":"2024-11-10T23:02:00Z","language":[{"iso":"eng"}],"intvolume":"       690","fulldoi":"https://doi.org/10.1051/0004-6361/202450918","project":[{"grant_number":"101034413","call_identifier":"H2020","_id":"fc2ed2f7-9c52-11eb-aca3-c01059dda49c","name":"IST-BRIDGE: International postdoctoral program"}],"article_number":"A217","scopus_import":"1","oa":1,"department":[{"_id":"LiBu"}],"OA_type":"hybrid","article_processing_charge":"No","author":[{"last_name":"Das","full_name":"Das, Srijan B","orcid":"0000-0003-0896-7972","id":"9ce7c423-dacf-11ed-8942-e09c6cb27149","first_name":"Srijan B"},{"id":"f1497a1a-72ef-11ef-b75a-fd877bbf6e8c","first_name":"Lukas","last_name":"Einramhof","full_name":"Einramhof, Lukas"},{"full_name":"Bugnet, Lisa Annabelle","last_name":"Bugnet","orcid":"0000-0003-0142-4000","first_name":"Lisa Annabelle","id":"d9edb345-f866-11ec-9b37-d119b5234501"}],"publication_status":"published","has_accepted_license":"1","tmp":{"image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"file":[{"file_name":"2024_AstronomyAstrophysics_Das.pdf","success":1,"file_id":"18534","relation":"main_file","checksum":"d43bbe6ed8ce4512e65e2d0d87070cf6","creator":"dernst","content_type":"application/pdf","access_level":"open_access","date_created":"2024-11-11T09:01:11Z","file_size":5306256,"date_updated":"2024-11-11T09:01:11Z"}],"_id":"18528","citation":{"apa":"Das, S. B., Einramhof, L., &#38; Bugnet, L. A. (2024). Unveiling complex magnetic field configurations in red giant stars. <i>Astronomy &#38; Astrophysics</i>. EDP Sciences. <a href=\"https://doi.org/10.1051/0004-6361/202450918\">https://doi.org/10.1051/0004-6361/202450918</a>","ieee":"S. B. Das, L. Einramhof, and L. A. Bugnet, “Unveiling complex magnetic field configurations in red giant stars,” <i>Astronomy &#38; Astrophysics</i>, vol. 690. EDP Sciences, 2024.","ama":"Das SB, Einramhof L, Bugnet LA. Unveiling complex magnetic field configurations in red giant stars. <i>Astronomy &#38; Astrophysics</i>. 2024;690. doi:<a href=\"https://doi.org/10.1051/0004-6361/202450918\">10.1051/0004-6361/202450918</a>","ista":"Das SB, Einramhof L, Bugnet LA. 2024. Unveiling complex magnetic field configurations in red giant stars. Astronomy &#38; Astrophysics. 690, A217.","short":"S.B. Das, L. Einramhof, L.A. Bugnet, Astronomy &#38; Astrophysics 690 (2024).","chicago":"Das, Srijan B, Lukas Einramhof, and Lisa Annabelle Bugnet. “Unveiling Complex Magnetic Field Configurations in Red Giant Stars.” <i>Astronomy &#38; Astrophysics</i>. EDP Sciences, 2024. <a href=\"https://doi.org/10.1051/0004-6361/202450918\">https://doi.org/10.1051/0004-6361/202450918</a>.","mla":"Das, Srijan B., et al. “Unveiling Complex Magnetic Field Configurations in Red Giant Stars.” <i>Astronomy &#38; Astrophysics</i>, vol. 690, A217, EDP Sciences, 2024, doi:<a href=\"https://doi.org/10.1051/0004-6361/202450918\">10.1051/0004-6361/202450918</a>."},"day":"01","publication":"Astronomy & Astrophysics","quality_controlled":"1","das_tickbox":"1","acknowledgement":"The authors thank S. Mathis, L. Barrault, S. Torres, A. Cristea, and K. M. Smith for very useful discussions. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curíe grant agreement No 101034413. The authors thank the anonymous referee for valuable comments and suggestions to improve the manuscript.","OA_place":"publisher","supplementarymaterial":"yes","dataavailabilitystatement":"The MESA inlist file is available at https://doi.org/10.5281/zenodo.12804810","year":"2024","abstract":[{"text":"The recent measurement of magnetic field strength inside the radiative interior of red giant stars has opened the way toward full 3D characterization of the geometry of stable large-scale magnetic fields. However, current measurements, which are limited to dipolar (ℓ = 1) mixed modes, do not properly constrain the topology of magnetic fields due to degeneracies on the observed magnetic field signature on such ℓ = 1 mode frequencies. Efforts focused toward unambiguous detections of magnetic field configurations are now key to better understand angular momentum transport in stars. We investigated the detectability of complex magnetic field topologies (such as the ones observed at the surface of stars with a radiative envelope with spectropolarimetry) inside the radiative interior of red giants. We focused on a field composed of a combination of a dipole and a quadrupole (quadrudipole) and on an offset field. We explored the potential of probing such magnetic field topologies from a combined measurement of magnetic signatures on ℓ = 1 and quadrupolar (ℓ = 2) mixed mode oscillation frequencies. We first derived the asymptotic theoretical formalism for computing the asymmetric signature in the frequency pattern for ℓ = 2 modes due to a quadrudipole magnetic field. To access asymmetry parameters for more complex magnetic field topologies, we numerically performed a grid search over the parameter space to map the degeneracy of the signatures of given topologies. We demonstrate the crucial role played by ℓ = 2 mixed modes in accessing internal magnetic fields with a quadrupolar component. The degeneracy of the quadrudipole compared to pure dipolar fields is lifted when considering magnetic asymmetries in both ℓ = 1 and ℓ = 2 mode frequencies. In addition to the analytical derivation for the quadrudipole, we present the prospect for complex magnetic field inversions using magnetic sensitivity kernels from standard perturbation analysis for forward modeling. Using this method, we explored the detectability of offset magnetic fields from ℓ = 1 and ℓ = 2 frequencies and demonstrate that offset fields may be mistaken for weak and centered magnetic fields, resulting in underestimating the magnetic field strength in stellar cores. We emphasize the need to characterize ℓ = 2 mixed-mode frequencies, (along with the currently characterized ℓ = 1 mixed modes), to unveil the higher-order components of the geometry of buried magnetic fields and to better constrain angular momentum transport inside stars.","lang":"eng"}],"status":"public","title":"Unveiling complex magnetic field configurations in red giant stars","corr_author":"1","isi":1,"month":"10","type":"journal_article","ec_funded":1,"external_id":{"arxiv":["2405.20133"],"isi":["001336485200015"]},"researchdata_availability":"yes","publication_identifier":{"issn":["0004-6361"],"eissn":["1432-0746"]},"doi":"10.1051/0004-6361/202450918","date_published":"2024-10-01T00:00:00Z","arxiv":1},{"tmp":{"legal_code_url":"https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode","short":"CC BY-NC-ND (4.0)","name":"Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)","image":"/images/cc_by_nc_nd.png"},"file":[{"file_id":"15340","success":1,"file_name":"2024_PNAS_Godavarthi.pdf","checksum":"f3b4ffad4ef3d1c443414edf0cd2392c","relation":"main_file","date_created":"2024-04-23T06:53:14Z","access_level":"open_access","creator":"dernst","content_type":"application/pdf","date_updated":"2024-04-23T06:53:14Z","file_size":16187094}],"has_accepted_license":"1","publication_status":"published","citation":{"chicago":"Godavarthi, Swetha K., Masaki Hiramoto, Yuri Ignatyev, Jacqueline B. Levin, Hui Quan Li, Marta Pratelli, Jennifer Borchardt, et al. “Postsynaptic Receptors Regulate Presynaptic Transmitter Stability through Transsynaptic Bridges.” <i>Proceedings of the National Academy of Sciences of the United States of America</i>. National Academy of Sciences, 2024. <a href=\"https://doi.org/10.1073/pnas.2318041121\">https://doi.org/10.1073/pnas.2318041121</a>.","mla":"Godavarthi, Swetha K., et al. “Postsynaptic Receptors Regulate Presynaptic Transmitter Stability through Transsynaptic Bridges.” <i>Proceedings of the National Academy of Sciences of the United States of America</i>, vol. 121, no. 15, e2318041121, National Academy of Sciences, 2024, doi:<a href=\"https://doi.org/10.1073/pnas.2318041121\">10.1073/pnas.2318041121</a>.","short":"S.K. Godavarthi, M. Hiramoto, Y. Ignatyev, J.B. Levin, H.Q. Li, M. Pratelli, J. Borchardt, C. Czajkowski, L.N. Borodinsky, L.B. Sweeney, H.T. Cline, N.C. Spitzer, Proceedings of the National Academy of Sciences of the United States of America 121 (2024).","ista":"Godavarthi SK, Hiramoto M, Ignatyev Y, Levin JB, Li HQ, Pratelli M, Borchardt J, Czajkowski C, Borodinsky LN, Sweeney LB, Cline HT, Spitzer NC. 2024. Postsynaptic receptors regulate presynaptic transmitter stability through transsynaptic bridges. Proceedings of the National Academy of Sciences of the United States of America. 121(15), e2318041121.","ieee":"S. K. Godavarthi <i>et al.</i>, “Postsynaptic receptors regulate presynaptic transmitter stability through transsynaptic bridges,” <i>Proceedings of the National Academy of Sciences of the United States of America</i>, vol. 121, no. 15. National Academy of Sciences, 2024.","ama":"Godavarthi SK, Hiramoto M, Ignatyev Y, et al. Postsynaptic receptors regulate presynaptic transmitter stability through transsynaptic bridges. <i>Proceedings of the National Academy of Sciences of the United States of America</i>. 2024;121(15). doi:<a href=\"https://doi.org/10.1073/pnas.2318041121\">10.1073/pnas.2318041121</a>","apa":"Godavarthi, S. K., Hiramoto, M., Ignatyev, Y., Levin, J. B., Li, H. Q., Pratelli, M., … Spitzer, N. C. (2024). Postsynaptic receptors regulate presynaptic transmitter stability through transsynaptic bridges. <i>Proceedings of the National Academy of Sciences of the United States of America</i>. National Academy of Sciences. <a href=\"https://doi.org/10.1073/pnas.2318041121\">https://doi.org/10.1073/pnas.2318041121</a>"},"day":"09","quality_controlled":"1","publication":"Proceedings of the National Academy of Sciences of the United States of America","das_tickbox":"1","_id":"15335","supplementarymaterial":"yes","acknowledgement":"We  thank  all  members  of  the  Spitzer  laboratory  for  discussions  and  critical  feedback;  K.  Marek  for  discussions  of  acknowledgment  signals; I. Gregor and R. Aricescu for discussions of receptor pharmacology and transsynaptic  bridges;  C.  Kintner  for  advice  on  Xenopus  blastomere  lineage;  A.  Ray and E. Park for guidance on miniature analysis; A. Glavis- Bloom, S.U. Choi, S. Atkins, M. Gupta, and S. Malladi for technical assistance; and D. K. Berg and L. R. Squire for comments on the manuscript. This work was supported by NSF 2051555 and the Overland Foundation. Microscopy for five- channel imaging utilized the UCSD School of Medicine Microscopy Core, supported by NIH grant NS047101.","status":"public","title":"Postsynaptic receptors regulate presynaptic transmitter stability through transsynaptic bridges","dataavailabilitystatement":"All data are included in the manuscript and/or supporting information.","year":"2024","abstract":[{"lang":"eng","text":"Stable matching of neurotransmitters with their receptors is fundamental to synapse function and reliable communication in neural circuits. Presynaptic neurotransmitters regulate the stabilization of postsynaptic transmitter receptors. Whether postsynaptic receptors regulate stabilization of presynaptic transmitters has received less attention. Here, we show that blockade of endogenous postsynaptic acetylcholine receptors (AChR) at the neuromuscular junction destabilizes the cholinergic phenotype in motor neurons and stabilizes an earlier, developmentally transient glutamatergic phenotype. Further, expression of exogenous postsynaptic gamma-aminobutyric acid type A receptors (GABAA receptors) in muscle cells stabilizes an earlier, developmentally transient GABAergic motor neuron phenotype. Both AChR and GABAA receptors are linked to presynaptic neurons through transsynaptic bridges. Knockdown of specific components of these transsynaptic bridges prevents stabilization of the cholinergic or GABAergic phenotypes. Bidirectional communication can enforce a match between transmitter and receptor and ensure the fidelity of synaptic transmission. Our findings suggest a potential role of dysfunctional transmitter receptors in neurological disorders that involve the loss of the presynaptic transmitter."}],"isi":1,"month":"04","type":"journal_article","researchdata_availability":"yes (supplementary data)","publication_identifier":{"eissn":["1091-6490"]},"external_id":{"isi":["001243892800004"],"pmid":["38568976"]},"doi":"10.1073/pnas.2318041121","date_published":"2024-04-09T00:00:00Z","pmid":1,"publisher":"National Academy of Sciences","oa_version":"Published Version","article_type":"original","volume":121,"ddc":["570"],"file_date_updated":"2024-04-23T06:53:14Z","date_updated":"2026-10-16T08:57:16Z","date_created":"2024-04-21T22:00:53Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","language":[{"iso":"eng"}],"fulldoi":"https://doi.org/10.1073/pnas.2318041121","intvolume":"       121","issue":"15","article_number":"e2318041121","department":[{"_id":"LoSw"}],"article_processing_charge":"Yes (in subscription journal)","author":[{"last_name":"Godavarthi","full_name":"Godavarthi, Swetha K.","first_name":"Swetha K."},{"last_name":"Hiramoto","full_name":"Hiramoto, Masaki","first_name":"Masaki"},{"full_name":"Ignatyev, Yuri","last_name":"Ignatyev","first_name":"Yuri"},{"last_name":"Levin","full_name":"Levin, Jacqueline B.","first_name":"Jacqueline B."},{"last_name":"Li","full_name":"Li, Hui Quan","first_name":"Hui Quan"},{"first_name":"Marta","full_name":"Pratelli, Marta","last_name":"Pratelli"},{"first_name":"Jennifer","last_name":"Borchardt","full_name":"Borchardt, Jennifer"},{"last_name":"Czajkowski","full_name":"Czajkowski, Cynthia","first_name":"Cynthia"},{"last_name":"Borodinsky","full_name":"Borodinsky, Laura N.","first_name":"Laura N."},{"orcid":"0000-0001-9242-5601","first_name":"Lora Beatrice Jaeger","id":"56BE8254-C4F0-11E9-8E45-0B23E6697425","full_name":"Sweeney, Lora Beatrice Jaeger","last_name":"Sweeney"},{"first_name":"Hollis T.","full_name":"Cline, Hollis T.","last_name":"Cline"},{"first_name":"Nicholas C.","full_name":"Spitzer, Nicholas C.","last_name":"Spitzer"}],"scopus_import":"1","oa":1},{"doi":"10.1523/JNEUROSCI.1238-24.2024","date_published":"2024-10-02T00:00:00Z","external_id":{"isi":["001335212200016"],"pmid":["39358025"]},"researchdata_availability":"no","publication_identifier":{"eissn":["1529-2401"]},"main_file_link":[{"open_access":"1","url":"https://doi.org/10.1523/JNEUROSCI.1238-24.2024"}],"type":"journal_article","isi":1,"month":"10","year":"2024","abstract":[{"text":"Motor circuits represent the main output of the central nervous system and produce dynamic behaviors ranging from relatively simple rhythmic activities like swimming in fish and breathing in mammals to highly sophisticated dexterous movements in humans. Despite decades of research, the development and function of motor circuits remain poorly understood. Breakthroughs in the field recently provided new tools and tractable model systems that set the stage to discover the molecular mechanisms and circuit logic underlying motor control. Here, we describe recent advances from both vertebrate (mouse, frog) and invertebrate (nematode, fruit fly) systems on cellular and molecular mechanisms that enable motor circuits to develop and function and highlight conserved and divergent mechanisms necessary for motor circuit development.","lang":"eng"}],"title":"Molecular and cellular mechanisms of motor circuit development","status":"public","acknowledgement":"Work in the authors’ labs is funded by the Helmholtz Association (N.Z.), National Institute of Neurological Disorders and Stroke (NINDS) R01NS116365 (P.K.), NINDS R01NS123439 and National Science Foundation IOS-2048080 (R.C.), NINDS R01NS114510 (P.P.), Natural Sciences and Engineering Research Council of Canada RGPIN-2021-03154 (K.M.) and Horizon Europe European Research Council Starting Grant Number 101041551 (L.B.S.). P.P. is the Weidenthal Family Designated Professor in Career Development.","OA_embargo":"6 months","OA_place":"publisher","supplementarymaterial":"no","_id":"18305","day":"02","citation":{"ieee":"P. Kratsios, N. Zampieri, R. Carrillo, K. Mizumoto, L. B. Sweeney, and P. Philippidou, “Molecular and cellular mechanisms of motor circuit development,” <i>The Journal of Neuroscience</i>, vol. 44, no. 40. Society for Neuroscience, 2024.","ama":"Kratsios P, Zampieri N, Carrillo R, Mizumoto K, Sweeney LB, Philippidou P. Molecular and cellular mechanisms of motor circuit development. <i>The Journal of Neuroscience</i>. 2024;44(40). doi:<a href=\"https://doi.org/10.1523/JNEUROSCI.1238-24.2024\">10.1523/JNEUROSCI.1238-24.2024</a>","apa":"Kratsios, P., Zampieri, N., Carrillo, R., Mizumoto, K., Sweeney, L. B., &#38; Philippidou, P. (2024). Molecular and cellular mechanisms of motor circuit development. <i>The Journal of Neuroscience</i>. Society for Neuroscience. <a href=\"https://doi.org/10.1523/JNEUROSCI.1238-24.2024\">https://doi.org/10.1523/JNEUROSCI.1238-24.2024</a>","chicago":"Kratsios, Paschalis, Niccolò Zampieri, Robert Carrillo, Kota Mizumoto, Lora B. Sweeney, and Polyxeni Philippidou. “Molecular and Cellular Mechanisms of Motor Circuit Development.” <i>The Journal of Neuroscience</i>. Society for Neuroscience, 2024. <a href=\"https://doi.org/10.1523/JNEUROSCI.1238-24.2024\">https://doi.org/10.1523/JNEUROSCI.1238-24.2024</a>.","mla":"Kratsios, Paschalis, et al. “Molecular and Cellular Mechanisms of Motor Circuit Development.” <i>The Journal of Neuroscience</i>, vol. 44, no. 40, e1238242024, Society for Neuroscience, 2024, doi:<a href=\"https://doi.org/10.1523/JNEUROSCI.1238-24.2024\">10.1523/JNEUROSCI.1238-24.2024</a>.","short":"P. Kratsios, N. Zampieri, R. Carrillo, K. Mizumoto, L.B. Sweeney, P. Philippidou, The Journal of Neuroscience 44 (2024).","ista":"Kratsios P, Zampieri N, Carrillo R, Mizumoto K, Sweeney LB, Philippidou P. 2024. Molecular and cellular mechanisms of motor circuit development. The Journal of Neuroscience. 44(40), e1238242024."},"das_tickbox":"0","quality_controlled":"1","publication":"The Journal of Neuroscience","publication_status":"published","has_accepted_license":"1","oa":1,"scopus_import":"1","article_processing_charge":"No","department":[{"_id":"LoSw"}],"author":[{"first_name":"Paschalis","full_name":"Kratsios, Paschalis","last_name":"Kratsios"},{"last_name":"Zampieri","full_name":"Zampieri, Niccolò","first_name":"Niccolò"},{"full_name":"Carrillo, Robert","last_name":"Carrillo","first_name":"Robert"},{"first_name":"Kota","full_name":"Mizumoto, Kota","last_name":"Mizumoto"},{"orcid":"0000-0001-9242-5601","first_name":"Lora Beatrice Jaeger","id":"56BE8254-C4F0-11E9-8E45-0B23E6697425","full_name":"Sweeney, Lora Beatrice Jaeger","last_name":"Sweeney"},{"last_name":"Philippidou","full_name":"Philippidou, Polyxeni","first_name":"Polyxeni"}],"OA_type":"hybrid","article_number":"e1238242024","issue":"40","intvolume":"        44","project":[{"grant_number":"101041551","name":"Development and Evolution of Tetrapod Motor Circuits","_id":"ebb66355-77a9-11ec-83b8-b8ac210a4dae"}],"fulldoi":"https://doi.org/10.1523/JNEUROSCI.1238-24.2024","language":[{"iso":"eng"}],"user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_created":"2024-10-13T22:01:49Z","date_updated":"2026-10-16T08:57:51Z","ddc":["570"],"volume":44,"oa_version":"Published Version","article_type":"original","pmid":1,"publisher":"Society for Neuroscience"},{"page":"1088-1101","ec_funded":1,"type":"journal_article","month":"09","isi":1,"doi":"10.1038/s41550-024-02304-w","date_published":"2024-09-01T00:00:00Z","publication_identifier":{"eissn":["2397-3366"]},"researchdata_availability":"yes","external_id":{"isi":["001254181700001"]},"publication":"Nature Astronomy","das_tickbox":"1","quality_controlled":"1","day":"01","citation":{"ista":"Hanson CS, Das SB, Mani P, Hanasoge S, Sreenivasan KR. 2024. Supergranular-scale solar convection not explained by mixing-length theory. Nature Astronomy. 8, 1088–1101.","short":"C.S. Hanson, S.B. Das, P. Mani, S. Hanasoge, K.R. Sreenivasan, Nature Astronomy 8 (2024) 1088–1101.","chicago":"Hanson, Chris S., Srijan B Das, Prasad Mani, Shravan Hanasoge, and Katepalli R. Sreenivasan. “Supergranular-Scale Solar Convection Not Explained by Mixing-Length Theory.” <i>Nature Astronomy</i>. Springer Nature, 2024. <a href=\"https://doi.org/10.1038/s41550-024-02304-w\">https://doi.org/10.1038/s41550-024-02304-w</a>.","mla":"Hanson, Chris S., et al. “Supergranular-Scale Solar Convection Not Explained by Mixing-Length Theory.” <i>Nature Astronomy</i>, vol. 8, Springer Nature, 2024, pp. 1088–101, doi:<a href=\"https://doi.org/10.1038/s41550-024-02304-w\">10.1038/s41550-024-02304-w</a>.","apa":"Hanson, C. S., Das, S. B., Mani, P., Hanasoge, S., &#38; Sreenivasan, K. R. (2024). Supergranular-scale solar convection not explained by mixing-length theory. <i>Nature Astronomy</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41550-024-02304-w\">https://doi.org/10.1038/s41550-024-02304-w</a>","ama":"Hanson CS, Das SB, Mani P, Hanasoge S, Sreenivasan KR. Supergranular-scale solar convection not explained by mixing-length theory. <i>Nature Astronomy</i>. 2024;8:1088-1101. doi:<a href=\"https://doi.org/10.1038/s41550-024-02304-w\">10.1038/s41550-024-02304-w</a>","ieee":"C. S. Hanson, S. B. Das, P. Mani, S. Hanasoge, and K. R. Sreenivasan, “Supergranular-scale solar convection not explained by mixing-length theory,” <i>Nature Astronomy</i>, vol. 8. Springer Nature, pp. 1088–1101, 2024."},"_id":"17189","publication_status":"published","title":"Supergranular-scale solar convection not explained by mixing-length theory","status":"public","abstract":[{"text":"Supergranules, which are solar flow features with a lateral scale of 30,000–40,000 km and a lifetime of ~24 h, form a prominent component of the Sun’s convective spectrum. However, their internal flows, which can be probed only by helioseismology, are not well understood. We analyse dopplergrams recorded by the Solar Dynamics Observatory satellite to identify and characterize ~23,000 supergranules. We find that the vertical flows peak at a depth of ~10,000 km, and remain invariant over the full range of lateral supergranular scales, contrary to numerical predictions. We also infer that, within the local seismic resolution (≳5,000 km), downflows are ~40% weaker than upflows, indicating an apparent mass-flux imbalance. This may imply that the descending flows also comprise plumes, which maintain the mass balance but are simply too small to be detected by seismic waves. These results challenge the widely used mixing-length description of solar convection.","lang":"eng"}],"year":"2024","dataavailabilitystatement":"The HMI data are courtesy of NASA/SDO and the HMI Science Team. The HMI data are available from the Joint Science Operations Center export site http://jsoc.stanford.edu/. Due to the large volume of data, the mode-coupling products and kernels are available from the authors upon request. The numerical simulations are available upon request from M. Rempel.","supplementarymaterial":"yes","acknowledgement":"We thank F. J. Simons for the codes for computing Slepian functions,\r\nM. Rempel and R. Cameron for their insights into solar convection, J.\r\nW. Lord for the numerical simulations and J. Naranjo for his help with\r\nthe NYUAD NetDRMS system. This research was carried out with the\r\nHigh Performance Computing resources at NYUAD. The datasets were\r\nprepared in the data centre at the Center for Space Science of NYUAD.\r\nThis research is based upon work supported by Tamkeen under the\r\nNYUAD Research Institute (Grant Nos G1502 and CASS to C.S.H,\r\nS.H. and K.R.S.). S.H. acknowledges funding from the Department\r\nof Atomic Energy, India. K.R.S. and S.H. acknowledge support from\r\nthe Ofice of Sponsored Research of King Abdullah University of\r\nScience and Technology (Award No. OSR-CRG2020-4342). S.B.D.\r\nacknowledges funding from the Elisabeth H. and F. A. Dahlen Award\r\n2022 by the Department of Geosciences, Princeton University. S.B.D.\r\nalso acknowledges funding from the European Union’s Horizon 2020\r\nresearch and innovation programme under a Marie Skłodowska-Curie\r\ngrant (Grant Agreement No. 101034413). Some data products were\r\nprocessed and downloaded from the German Data Center for SDO,\r\nwhich is funded by the German Aerospace Center (DLR Grant No.\r\n500L1701).","fulldoi":"https://doi.org/10.1038/s41550-024-02304-w","project":[{"grant_number":"101034413","_id":"fc2ed2f7-9c52-11eb-aca3-c01059dda49c","call_identifier":"H2020","name":"IST-BRIDGE: International postdoctoral program"}],"intvolume":"         8","language":[{"iso":"eng"}],"article_processing_charge":"No","OA_type":"closed access","author":[{"first_name":"Chris S.","full_name":"Hanson, Chris S.","last_name":"Hanson"},{"orcid":"0000-0003-0896-7972","first_name":"Srijan B","id":"9ce7c423-dacf-11ed-8942-e09c6cb27149","full_name":"Das, Srijan B","last_name":"Das"},{"full_name":"Mani, Prasad","last_name":"Mani","first_name":"Prasad"},{"first_name":"Shravan","last_name":"Hanasoge","full_name":"Hanasoge, Shravan"},{"first_name":"Katepalli R.","last_name":"Sreenivasan","full_name":"Sreenivasan, Katepalli R."}],"department":[{"_id":"LiBu"}],"scopus_import":"1","volume":8,"publisher":"Springer Nature","article_type":"original","oa_version":"None","date_created":"2024-06-30T22:01:05Z","user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","date_updated":"2026-10-16T08:55:21Z"},{"date_updated":"2026-10-16T08:53:43Z","OA_place":"repository","related_material":{"record":[{"id":"18528","relation":"used_in_publication","status":"public"}]},"title":"MESA inlist file","status":"public","date_created":"2026-09-04T09:42:23Z","year":"2024","abstract":[{"lang":"eng","text":"MESA inlist file for the paper \"Unveiling complex magnetic field configurations in red giant stars\" (10.1051/0004-6361/202450918)"}],"user_id":"317138e5-6ab7-11ef-aa6d-ffef3953e345","publisher":"Institute of Science and Technology Austria","oa_version":"None","citation":{"ista":"Das SB, Einramhof L, Bugnet L. 2024. MESA inlist file, Institute of Science and Technology Austria, <a href=\"https://doi.org/10.5281/zenodo.12804810\">10.5281/zenodo.12804810</a>.","short":"S.B. Das, L. Einramhof, L. Bugnet, (2024).","chicago":"Das, Srijan B, Lukas Einramhof, and Lisa Bugnet. “MESA Inlist File.” Institute of Science and Technology Austria, 2024. <a href=\"https://doi.org/10.5281/zenodo.12804810\">https://doi.org/10.5281/zenodo.12804810</a>.","mla":"Das, Srijan B., et al. <i>MESA Inlist File</i>. Institute of Science and Technology Austria, 2024, doi:<a href=\"https://doi.org/10.5281/zenodo.12804810\">10.5281/zenodo.12804810</a>.","apa":"Das, S. B., Einramhof, L., &#38; Bugnet, L. (2024). MESA inlist file. Institute of Science and Technology Austria. <a href=\"https://doi.org/10.5281/zenodo.12804810\">https://doi.org/10.5281/zenodo.12804810</a>","ieee":"S. B. Das, L. Einramhof, and L. Bugnet, “MESA inlist file.” Institute of Science and Technology Austria, 2024.","ama":"Das SB, Einramhof L, Bugnet L. 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Springer Nature, 2024. <a href=\"https://doi.org/10.1038/s41467-024-53127-2\">https://doi.org/10.1038/s41467-024-53127-2</a>.","ista":"Dos Santos C, Cambraia A, Shrestha S, Cutler M, Cottam M, Perkins G, Lev-Ram V, Roy B, Acree C, Kim KY, Deerinck T, Dean D, Cartailler JP, Macdonald PE, Hetzer M, Ellisman M, Arrojo E Drigo R. 2024. Calorie restriction increases insulin sensitivity to promote beta cell homeostasis and longevity in mice. Nature Communications. 15, 9063.","short":"C. Dos Santos, A. Cambraia, S. Shrestha, M. Cutler, M. Cottam, G. Perkins, V. Lev-Ram, B. Roy, C. Acree, K.Y. Kim, T. Deerinck, D. Dean, J.P. Cartailler, P.E. Macdonald, M. Hetzer, M. Ellisman, R. Arrojo E Drigo, Nature Communications 15 (2024).","ieee":"C. Dos Santos <i>et al.</i>, “Calorie restriction increases insulin sensitivity to promote beta cell homeostasis and longevity in mice,” <i>Nature Communications</i>, vol. 15. Springer Nature, 2024.","ama":"Dos Santos C, Cambraia A, Shrestha S, et al. Calorie restriction increases insulin sensitivity to promote beta cell homeostasis and longevity in mice. <i>Nature Communications</i>. 2024;15. doi:<a href=\"https://doi.org/10.1038/s41467-024-53127-2\">10.1038/s41467-024-53127-2</a>","apa":"Dos Santos, C., Cambraia, A., Shrestha, S., Cutler, M., Cottam, M., Perkins, G., … Arrojo E Drigo, R. (2024). Calorie restriction increases insulin sensitivity to promote beta cell homeostasis and longevity in mice. <i>Nature Communications</i>. Springer Nature. <a href=\"https://doi.org/10.1038/s41467-024-53127-2\">https://doi.org/10.1038/s41467-024-53127-2</a>"},"day":"21","OA_place":"publisher","DOAJ_listed":"1","acknowledgement":"We are thankful to Michelle Reyzer from the Vanderbilt Mass Spectrometry Research Center for assistance with MALDI-MS imaging and analysis, to the outstanding team at the Vanderbilt Mouse Metabolic Phenotyping Center for all the assistance with in vivo glucose homeostasis tests (DK135073, 1S10RR028101-01). We also thank the University of Michigan Animal Phenotyping Core for conducting the bomb calorimetry experiments (1U2CDK110768, DK020575, and DK089503). This research was supported by recruitment funds from the Vanderbilt’s Department of Molecular Physiology and Biophysics and NIH grants 1R03DK127484, 5U24DK097771, and 1R01DK138141 to RAeD, by a grant from the Canadian Institutes of Health Research (CIHR; 487188) to PEM, by and NIH DK132669 to D.D. PEM holds the Canada Research Chair in Islet Biology.","supplementarymaterial":"yes","abstract":[{"text":"Caloric restriction (CR) can extend the organism life- and health-span by improving glucose homeostasis. How CR affects the structure-function of pancreatic beta cells remains unknown. We used single nucleus transcriptomics to show that CR increases the expression of genes for beta cell identity, protein processing, and organelle homeostasis. Gene regulatory network analysis reveal that CR activates transcription factors important for beta cell identity and homeostasis, while imaging metabolomics demonstrates that beta cells upon CR are more energetically competent. In fact, high-resolution microscopy show that CR reduces beta cell mitophagy to increase mitochondria mass and the potential for ATP generation. However, CR beta cells have impaired adaptive proliferation in response to high fat diet feeding. Finally, we show that long-term CR delays the onset of beta cell aging hallmarks and promotes cell longevity by reducing beta cell turnover. Therefore, CR could be a feasible approach to preserve compromised beta cell structure-function during aging and diabetes.","lang":"eng"}],"year":"2024","dataavailabilitystatement":"Tabular and processed sequencing data is deposited in Zenodo (https://doi.org/10.5281/zenodo.6491943). The single nucleus multiome sequencing data has been deposited in the GEO repository (GSE276572, https://www.ncbi.xyz/geo/query/acc.cgi?acc=GSE276572). Source data are provided with this paper.","title":"Calorie restriction increases insulin sensitivity to promote beta cell homeostasis and longevity in mice","status":"public"}]